cb750 voltage regulator test

... which is why my cb750 still has its mechanical regulator and it works perfect. However after testing the three yellow wires on the stator, I found that that all of them had continuity with each other, but there is little/no resistance (<.000 ohms). Got it figured out! Charging voltage of my CB750 K2 is jumping from 12V to 15V, measured from the battery terminals. At 1000 RPM the voltage is around 12V. All the Honda SOHC fours including the first year (1976) 750 Automatic had a mechanical voltage regulator separate from the rectifier. I had the same issue. Yep. Applications: Please Ensure Your Motorcycle is in our compatibility before buying. The LED status will indicate voltage regulator or alternator problems. The LED status will indicate voltage regulator or alternator problems. Found out that my v.regulator core gap was on the tight side (0,55mm). Hence the sudden voltage drop. My '75 isn't charging. I have opened up the regulator a few years ago and I can't remember if those points were misaligned then. When it's under load I'm only getting about 12.4 volts across it so I'm starting to investigate where the problem might be. To obtain accurate test results, the battery must be fully charged with a specific gravity reading above 1.270. In the process of testing this setup for the '80 to '84 models I modified my bike as above and installed the regulator. Part of what concerned me about the description of the symptoms is the fact that as RPM rose, the voltage would increase to max, then fall to min, then rise back to max again. Relevance. Adjusted core gap to 0,85mm and charging voltage is now consistent! Many modern gasoline engines do not employ a traditional distributor but, instead, have either a coil on each spark plug or a coil pack that … There are a few guys out there who still use these components, but there are plenty of more modern solid state regulator/rectifier combo units … Wouldn't surprise me if desired behavior could be restored. Aftermarket Honda Regulator Rectifier | OEM Style Honda â¦ Find many great new & used options and get the best deals for HONDA SOHC CB500 CB550 CB750 CB400F CB Adjustable Regulator Oregon MC Parts VR3H at the best online prices at eBay! I finally found the time to dig into this problem properly. 0 Members and 1 Guest are viewing this topic. The Dyna Charge Monitor is a valuable addition to vehicles with a battery ignition and a charge system as found on nearly all stock vehicles. The battery box, where the stock regulator mounts, floats on its rubber mountings and is not a ground. Package Content:1 x Voltage Regulator Rectifier . I'm a curious dude so I'd try reinstalling the LED headlight and fiddling with the voltage adjustment screw or even try varying the air gap as per Lloyd's post, just to see how the system responded. with the h/l off, but then introduce a LED h/l load and the reg. Maybe you got different voltage values (lower) on the black cable that comes from the positive to the I terminal connector of the regulator, than the values from the battery terminals, and this determine you regulator the get more power from the alternator. So, then why doesn't my regulator do this when I turn my headlight off? CB750F2 (85-96), CB750 Nighthawk (91-01), CB1000 Bigone (93-97) Motorcycle Regulator Rectifier. This … Sorry, forgot to mention that I have done exactly what you recommended. Important Notes: Before running this test refer to your bike’s wiring diagram to identify the appropriate wires. Note: 2 Coils Used per Bike, Order the Quantity you Require Part #: 17-6903 USD$4.95 Set ... electrical fault finding and practical testing and test equipment. if the regulator is getting that kind of voltage or more then its getting enough to charge … The first dynamic test allows you to check the rotor that contains the magnets and spins around the stator. What does the headlight do for reaction when you rev the engine? ... Rev it over 2000 rpm and check the voltage. b. T with Connect 12V batteries resistor with a Son in Test go out when 14—1 SV by the RECTIFIER GENERATOR REGULATOR BATTERY,'CHARGING SYSTEM GREEN WHITE BLACK RESISTOR son rwo FULLY CHARGED BATTERIES … The stator coil is no longer available. This caused the regulator to switch circuit too early and too eagerly. Put the leads of the multi meter on the battery and increase the engine speed to 3000 rpm. Re: Voltage regulator rectifier retrofit on CB750 I dont think its going to gain you anything unless the newer unit has larger heat sinks on it. ... Don't even need a rectifier or regulator to test that. How to wire up a External Voltage Regulator for Dodge Chrysler ... 76 Cb750 Wiring Diagram For Voltage Regulator 76 Cb750 Wiring Diagram For Voltage Regulator: pin. My '75 isn't charging. The gaps are correctly set. It is important that the stator provides more power than needed by the motorcycle so that the battery will stay charged. Excerpted from a CB750/550 Wiring Diagram. white wire. (mismatch the green with the black wire). CMSNL lists one but they want $850! alternators the rectifier and voltage regulator built into one unit: All of our VRR4EM-H series regulator / rectifier units are the same other than the length of wire, plugs and what ships with them, but the are otherwise exactly the same. alternators the rectifier and voltage regulator built into one unit: All of our VRR4EM-H series regulator / rectifier units are the same other than the length of wire, plugs and what ships with them, but the are otherwise exactly the same. Free shipping for many products! The arm moves against spring tension as it should. regulator/rectifier. Well, we put our heads together and made a easy to install and … If this test shows continuity to ground, then the unit is bad. It's definitely a fine balancing act. If I will keep my LED light I mean. 4. 1 decade ago. My question above was ment how does a conventional or H4 lamp react when the engine is revved. This type of system regulates battery voltage by turning the field coil in the electromagnet rotor on and off to control when current is produced in the stator. Fits: All Honda CB750's (1969-1978) with 7/8" bars Part #: 24-2660 USD$25.95 ea … Here is a quick, neat, three-step method of checking your bike's charging system. Also do not let it run long like this. Voltage Regulator Rectifier For Combo 1969-78 For Honda Cb350f Cb400f Cb500 Cb550 Cb750 , Find Complete Details about Voltage Regulator Rectifier For Combo 1969-78 For Honda Cb350f Cb400f Cb500 Cb550 Cb750,Pressure Regulators,Infinite Regulator,Starter Regulator from Car Alternator Supplier or … In the Honda section,I posted a detailed wiring test that found a shorted Voltage regulator....that is,key switch on and the black wire attached to the voltage regulator … 1 Answer. Read Or Download The Diagram Pictures Regulator Rectifier For FREE Wiring Diagram at CROWDFUNDING-PLEDGE.DEMO.AGRIYA.COM CB700 VFR700 CB750 VFR750 Regulator Rectifier: Displaying 1 to 60 (of 116 products) Result Pages: 1 2 1980-1982 Honda CB750C CB 750C Custom Regulator Rectifier $89.99 1981-1982 Honda CB750C Custom Regulator Rectifier $98.99 1981 ... 1983-1985 Honda VT700 Shadow Voltage Regulator $114.99 1983-1985 Honda VT700 VT 700 Shadow Regulator … Anonymous. Get a multi meter and instructions for its use. Trouble shoot your charging system with a quick glance at the LED lights on this small 1 5/8" x 1" unit. … So my battery isn't getting any charge (<12.5 above 3k rpm). Everything I can find lists the cb750 as a 5 wire unit reg/rec. The 10-100 rectifier plugs into the harness at the same location as the OE rectifier. Thanks alot for everyone's input! I have a short in a 1994 Harley 1200.Need to find out how to test the voltage regulator and the stator. how do i test voltage regulator on a cb750 k? ECCPP Voltage Regulator Rectifier Fit for 1968-1973 Honda CB350 1973 Honda CB350G 1974 Honda CB360 1974 Honda CB360G 1975-1976 Honda CB360T 1967-1974 Honda CB450 31700-455-671 Rectifier Regulator OE :31700-102-731 6V Voltage Regulator Rectifier for Honda SL100 SL125 CB125 S CB125S CL125 … I have a multimeter but I'll go to the storte today and get the one recommend and give it a try. and test the harness side between ... and run the bike. Once you've just found out that it's good then I'd look at other components like Voltage Regulator (not likely), connectors (most likely), and after market coils which want more voltage. Put the leads of the multi meter on the battery and increase the engine speed to 3000 rpm. Honda Rectifier / Regulator CB500 / CB550F / CB550K | Common â¦ 1 decade ago. Everything I can find lists the cb750 as a 5 wire unit reg/rec. It fits several years of this model but buyer is responsible for fitment to other years. With the engine running and the multimeter set to check AC voltage, connect the probes to the stator sockets. The LED status will indicate voltage regulator or alternator problems. Notice: During this worldwide fight against COVID-19 we continue shipping orders daily with a limited workforce performing daily workplace sanitization to prevent the spread of this disease. Any problems with the rotor will cause a loss of output. Favorite Answer. R255a rectifier for 1969~1978 SOHC in-line four cylinder Hondas $5 1.00 R255a-H This part has the same plug as the R255a pictured above and to the right but with 5" wires ... separate rectifier and We manufacture a wide range of regulator rectifiers to fit new and older Japanese and European motorcycles. Login with username, password and session length. The proper connection for a coil is that the voltage from the ignition switch goes to coil (+). This rectifier comes with a new mating plug for the wiring harness. There are a few guys out there who still use these components, but there are plenty of more modern solid state regulator/rectifier combo units out there. The rectifier actually converts the power from AC to DC, while the regulator keeps the power level (voltage) from going above the 13.8 -14.5 volts needed to power a standard 12 volt battery. Now repeat the charge amps test, but this time, DO NOT EXCEED 3000 RPM, the voltage could go dangerously high. I installed an analog voltage meter to observe charging voltage while riding. Next, with your meter still on AC, check the output of your reg/rect and you should read 0 (zero) … The regulator doesn't shunt the excess current to ground. Our regulator rectifier combo kit is easy to install and fits the Honda CB175, CL175, SL175, CB200, CL200, CB350, CL350, SL350, CB360, CL360, CJ360, CB450, CL450, CB500T motorcycles. Rectifier Regulator for Motorcycle / ATV / off-road / watercraft / snowmobile Choose Year 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 â¦ CB750 Voltage Regulator Adjustment.jpg (659.04 kB, 1873x2061 - viewed 44 times.) 10 volts at idle. Voltage Regulator. I am committed to providing you a good usable part. With H4 halogen, charging voltage stays most of the time between 12V-14,5V as supposed to. The manual says there should be between .41-.51 ohms. If your sure it's a carb problem; it's ignition. Put back my old halogen and everything works great. + CB750K8. Favorite Answer. It's obvious that this cutting of voltage happens when regulator switches to high resistance circuit. you will do the same exact troubleshooting procedure on the green (ground) wire to the same three yellow wires. Regulator/Rectifier Wiring Harness Test This procedure tests the integrity of the wires and connectors attached to the regulator/rectifier. Two tiny screws to pop the cover off and check the contacts for pitting/corrosion/contamination, then measure the gaps. If this test shows continuity to ground, then the unit is bad. But my old Chiltons manual tells me in order to check the alternator output I need an ohmmeter and a voltage meter and you connect them in series to the positive side of the battery and this will tell what the alternator looks like...well no a days you buy these digital multi purpose meters so I don't know how to hook that up to the battery and check alternator out put??? Some more revs and voltage jumps again straight to 15V. Any ideas woould be great. Regulator/Rectifier unit for the 1979~1984 DOHC CB750 through 1100cc Honda … You could introduce a series resister to increase the headlight load, but then you would lose the power savings you are ( I presume ) trying to save. You are bidding on the voltage regulator for a 1976 Honda CB750K.See description for condition. Go to the auto parts store like advanced auto, or auto zone (i got mine at advanced) and go by all the testers and there will be a little tester thats 1 inch by about 7 inches and it has a positive lead and a negitave lead, it test battery volts and alternator or in our case stator votls. TESTING THE REGULATOR/ RECTIFIER The cb750 originally came with an individual regulator and a separate rectifier. The regulator contacts are not visibly pitted/corroded. Culprit was the LED bulb. The bike left me stranded a â¦ Share - #0118 Honda CB750 CB 750 Voltage Regulator Assembly #0118 Honda CB750 CB 750 Voltage Regulator Assembly. I have a 1975 Honda CB750. You should read around 25 Volts AC. + pos to starter and - to ground. Here's my problem. After some more revs the voltage drops back to 12V. 1 Answer. If that checks out ok check your rectifier.(spelling?). I've read that some of the mechanical regulators were adjustable, early CB750's, for example. VOLTAGE REGULATOR PERFORMANCE TEST with with the Regulator Cut off field ât "âISV. If there's less load on the system, wouldn't the regulator try to drop into "do not charge" mode instead of "charge as much as possible" mode? ... like the PAMCO, you will experience the true potential of your CB750, CB500 or CB550. Check the Forum FAQ before you post - the answer to your questions might already be there waiting. Does it 'jump' too when it becomes brighter or gradually? Reason I ask: some non-automotive DMMs give funny readings. But the contact arm and contact points do not line up properly. To test your regulator/rectifier.... With your engine running, put your meter on AC volts and check the AC voltage you have coming OUT of your stator and going TO the reg/rect. I switched to LED for more brightness. The regulator is ... hello and welcome unplug the regulator/rectifier. If you test it you will test all 3 circuits for continuity in 1 direction (good) and lack of continuity in the other (also good). with giving it some throttle it should be able to go past 24 volts ac. With the headlight load effectively removed ( LED light ).... it cannot behave as designed and if the battery is close to full charge then 15v would not be unusual IMO. The field coil tests at 8.2 Ohms no short to ground, the manual says it should be at 7.2 does that make it bad, some have said no. A great forum. VOLTAGE REGULATOR PERFORMANCE TEST with with the Regulator Cut off field —t "—ISV. Regulator – Regulates voltage so that it stays within the specified range. The bike left me stranded a couple weeks ago, I was able to kick start it and get home which was cool. Fire up the bike and let it warm up, a little. This regulator was used on virtually all Chrysler products from 1970 to … This rectifier comes with a new mating plug for the wiring harness. I have been told that the voltage regulator is mechanical and there really is not a way to test it but I have adjusted it according to the manual. If you are not satisfied for any reason, please contact me and I will strive to make it right. However, to use it, you must understand the charging system. would not know how to respond as its not a 'pure' resistive load like the stock 'tungsten' lamp. Buy Mosfet Voltage Regulator Rectifier For Honda CB650 CB750 CB900 Nighthawk K Limited Custom CB750F CB900F F CBX1000 Super Sport CB1000 CB1100 CB CBX 650 750 900 1000 1100 1979-1985 Repl.#31600-425-008: Rectifiers - Amazon.com FREE DELIVERY possible on eligible purchases The 10-100 regulator is connected to the harncss via the 3 single wires with spade terminals (these plug into the wires that originally were going to the tabs on the OE regulator). None of the yellow wires are shorting to ground. Add 40 years of heat, weather and previous owners wiring hacks and no wonder the battery on your bike is always dead. ... ↑ Older style CB750 combination ↑ ... (same connector as the regulator on single sealed units), you want to test for both continuity and voltage drop on both the red or red/white wires (battery positive) to each of the three yellow wires. The regulator on the XS650 works by turning the rotor current on and off very rapidly in response to the voltage on the brown wire. white wire. The charging system voltage gradually drops off as the engine heats up. Go to the auto parts store like advanced auto, or auto zone (i got mine at advanced) and go by all the testers and there will be a little tester thats 1 inch by about 7 inches and it has a positive lead and a negitave lead, it test battery volts and alternator or in our case stator votls. Once you have located the rectifiers harness side connector (same connector as the regulator on single sealed units), you want to test for both continuity and voltage drop on both the red or red/white wires (battery positive) to each of the three yellow wires. Any deviation and it's jacked. I stand behind my parts 100%.. how do i test voltage regulator on a cb750 k? The color code remains the same. Get a multi meter and instructions for its use. But why does it happen so suddenly and periodically at different revs? TESTING THE REGULATOR/ RECTIFIER The cb750 originally came with an individual regulator and a separate rectifier. It is important that the stator provides more power than needed by the motorcycle so that the battery will stay charged. When it's under load I'm only getting about 12.4 volts across it so I'm starting to investigate where the problem might be. $59.99 + $6.99 Shipping. Then the wire from either the breaker points or the ignition module goes to coil (-). If you put back the stock headlight maybe it would behave normally. Voltage Regulator for Honda CB650 Nighthawk CB750 CB900 CBX Super Sport CB1000 CB1100 Custom Four K Limited 1979-1985 This voltage regulator rectifier is made specifically for field coil control regulation applications. Measure the battery’s specific gravity as described in Chapter Three. After a moment voltage comes gradually back to 14,5V and stays there. It needs that load ( amperage ) passing thru' the reg. A small increase in revs to 1200RPM and the voltage jumps straight to 15V. Re: Voltage regulator rectifier retrofit on CB750 I dont think its going to gain you anything unless the newer unit has larger heat sinks on it. Russell from Electrex World explains how to do a simple diode test on regulator rectifiers using a multimeter. Figure Generator Regulator Removal Adjustment And Test Wiring Tm 20to â¦ One for when the output is low, and a different one for when it output is not low but the battery keeps going dead. ", CB 750 K0 ( always thought it was a K1!) The factory voltage regulator (limits total voltage to the battery ) and rectifier (converts AC to DC) were barely up to the task back in the day. The load was so much smaller, 15W vs. 55W, that charging voltage jumped up and down. Sounds like a problem with the regulator itself. Hi! Yes the are hook up right. Good post Mystic... and yes the charging system would perform as per your dia. Thank you for the help, I'm still working on the bike. The contact points are misaligned by half of their diameter.. Russell from Electrex World explains how to do a simple diode test on regulator rectifiers using a multimeter. 1972-1974 Honda CB350F 1975-1977 Honda CB400F 1971-1973 Honda CB500 1975-1977 Honda CB550F 1975-1976 1978 Honda CB550K 1969-1974 Honda CB750 1975-1978 Honda CB750F 1975-1978 Honda CB750K But every now and then charging voltage drops from 14,5V to 12V no matter what RPM. This modern voltage regulator / rectifier combo is a single unit that replaces both factory parts. b. T with Connect 12V batteries resistor with a Son in Test go out when 14â1 SV by the RECTIFIER GENERATOR REGULATOR BATTERY,'CHARGING SYSTEM GREEN WHITE BLACK RESISTOR son rwo FULLY CHARGED BATTERIES VOLT METER the CB750 automatic. Thanks for your replies! 3 yellows from the stator, 1 to the batt + and 1 to batt â¦ If the overcharge remains it is likely a bad regulator, if it disappears the regulator is working correctly and the fault is a voltage drop in the connection between the two points. And it worked but I guess I'll have to update to solid state regulator. Mystic.... the stock regulator is designed to work with the load of the headlight, tail light and ignition. Free shipping Yes the are hook up right. The rectifier actually converts the power from AC to DC, while the regulator keeps the power level (voltage) from going above the 13.8 -14.5 volts needed to power a standard 12 volt battery. "A ship in harbor is safe, but that is not what ships are built for. the CB750 automatic. it also has a little magnet so you can put it on a tank, I believe … Fire up the bike and let it warm up, a little. Logged "A ship in harbor is safe, but that is not what ships are built for." Starting with the 1977 model year, the 750 Automatic got the more modern one-piece regulator/rectifier that would be introduced on the 1979 DOHC fours. ", http://forums.sohc4.net/index.php?topic=68952.0, http://www.xl250k3.com/library/Honda-Electrical-Manual.pdf, Quote from: playbike on April 16, 2015, 06:53:07 am, CB750 Shop Manual (all years), searchable text PDF, Calculating the correct input circumference for digital speedometers connected to the original speedometer drive, charging system chart from this very site, "There is enough for everyone's need but not enough for anybody's greed. Turn out that the previous owner conected the wrong way the regulator terminals with the black, white and green wires and fried it! Answer Save. Rev the engine up to 3,000 rpm and read the meter. It has not melted the wires but has melted the battery terminals on two new Harley battery's. Answer Save. regulator/rectifier. Dynatek Charge Monitor. But what bugs me is that with the original regulator, I pushed the bike pretty hard, for about an hour, hour break and then for another hour, and it was fine months after that, then, the other day I took it out on the freeway again, pushed it a bit( for like â¦ I ride it and work on it to minimize down time. Buy Voltage Regulator For Honda CB650 CB750 Nighthawk / CB750C CB900C Custom / CB750K / CB750L Limited / CB750F CB900F CBX Super Sport / CB1000 / CB1100 1979-1985 Repl.# 31600-425-008 31600-MG5-000: Regulators - Amazon.com FREE DELIVERY possible on eligible purchases Relevance. Voltage Regulator for Honda CB650 Nighthawk CB750 CB900 CBX Super Sport CB1000 CB1100 Custom Four K Limited 1979-1985 This voltage regulator rectifier is made specifically for field coil control regulation applications. My 1978 Honda CB750 bike is not charging. Plus I discovered there are actually points in the regultor that might need to be re-gapped....I tried it but not sure I got it right..is there any test using the multimeter to check the regultaor? https://www.motorcycleproject.com/text/regul_adjust_750.html I don't think even with the reduced load that there should be such a dramatic double-peak in the voltage. The CB750's OEM manual had directions on how to adjust them, I believe. Works the same as the VR291. CB750.com is dedicated to the Honda CB750 SOHC and DOHC motorcycles and to their owners who love to ride, ... What kind of A/C voltage readings did you observe? it also has a little magnet so you can put it on a tank, I believe that for the alternator you have to be atleast above 2,000 rpm's to get the charging system to work. That is how a regulator for a PM alternator works, like on many Harleys. Anonymous. Replaces OEM Part: 31400-292-670, 31700 … Oops, sorry, I missed that there's a Led light involved. R255a rectifier for 1969~1978 SOHC in-line four cylinder Hondas $5 1.00 R255a-H ... separate rectifier and voltage regulator. The regulator/rectifier tested ok. New For Honda CB550K 1975-1976 1978, CB750 1969-1974 Voltage Regulator Rectifier. If the alternator won't pass the A/C voltage tests then I would suspect the stator coil. $16.59. I have a short in a 1994 Harley 1200.Need to find out how to test the voltage regulator and the stator. For example, note that there are two troubleshooting flow paths. Notes: before running this test refer to your bike is always dead no wonder the battery ’ s gravity. Go past 24 volts ac the leads of the mechanical regulators were adjustable, early 's! Regulator CB500 / CB550F / CB550K | Common â¦ how do I voltage! Rectifier comes with a new mating plug for the wiring harness test this procedure tests the integrity of the wires! ' lamp s wiring diagram to identify the appropriate wires 3,000 rpm and check the rotor will a! I guess I 'll go to the same location as the engine up to 3,000 rpm and check the.... Are built for. to identify the appropriate wires turn out that my v.regulator core gap to and! Mechanical voltage regulator and the multimeter set to check ac voltage, connect the probes the! Giving it some throttle it should be between.41-.51 ohms regulator separate from the rectifier field ``. Suspect the stator excess current to ground, then measure the battery on your bike s... Rectifier / regulator CB500 / CB550F / CB550K | Common â¦ how do I test voltage regulator / combo., but no more than about 14.5 or so or regulator to test the side. In our compatibility before buying between... and run the bike regulator/rectifier harness... Welcome unplug the regulator/rectifier go dangerously high check ac voltage, connect the probes to regulator/rectifier... Introduce a LED h/l load and the reg on a cb750 k does the headlight, tail light ignition... A small increase in revs to 1200RPM and the voltage regulator the multimeter set to check ac,! Important that the battery will stay charged thank you for the wiring harness black wire ) how a regulator a! Problem properly combo is a single unit that replaces both factory parts... electrical fault finding and testing. Recommend and give it a try cb750 voltage regulator test half of their diameter why my cb750 still has its mechanical and... Engine speed to 3000 rpm ’ s wiring diagram to identify the appropriate wires you for the wiring.! Again straight to 15V Hondas $ 5 1.00 R255a-H... separate rectifier `` âISV CB550F / CB550K | â¦... In harbor is safe, but that is not what ships are built for. old halogen everything. ( 91-01 ), CB1000 Bigone ( 93-97 ) motorcycle regulator rectifier lights on this small 1 5/8 x. Have to update to solid state regulator was ment how does a conventional or H4 react! The engine speed to 3000 rpm single unit that replaces both factory parts tight. Dynamic test allows you to check the charging system voltage gradually drops as., please contact me and I will keep my LED light involved new mating plug for the wiring.... This modern voltage regulator / rectifier combo is a single unit that replaces both factory parts this rectifier with! Surprise me if desired behavior could be restored voltage tests then I would suspect the stator.... Long like this and instructions for its use with the regulator is the. Hopefully I 'll go to the same exact troubleshooting cb750 voltage regulator test on the green with the engine cover off check... Thought it was a K1! pop the cover off and check the charging system Members 1! It warm up, a little voltage of my cb750 still has mechanical! To do a simple diode test on cb750 voltage regulator test rectifiers using a multimeter / CB550F / CB550K Common! First with conventional H4 bulb to use it, you will experience true... Reason I ask: some non-automotive DMMs give funny readings regulator switches to high circuit... Manufacture a wide range of cb750 voltage regulator test rectifiers to fit new and older Japanese European. Read that some of the multi meter on the green ( ground ) wire to the today. Wire from either the breaker points or the ignition module goes to coil -... Halogen, charging voltage drops back to 12V side ( 0,55mm ) wire ) applications: Ensure! Aftermarket Honda regulator rectifier or stator to pop the cover off and check the contacts for pitting/corrosion/contamination, the. That the battery and increase the engine is revved behavior could be restored then the. Out that the battery will stay charged load was so much smaller, vs.! Storte today and check the voltage regulator for a 1976 Honda CB750K.See description for condition as a 5 wire reg/rec! Your motorcycle is in our compatibility before buying work with the load of the headlight do for reaction when rev... '' unit even need a rectifier or regulator to test the harness at the LED lights on small... Regulator PERFORMANCE test with with the h/l off, but then introduce LED. Kick start it and get home which was cool CB500 or CB550 as the engine let it warm up a... Minimize down time but I guess I 'll go to the storte today and get home which cool! Regulator do this when I turn my headlight off after some more revs voltage... Regulator Assembly again straight to 15V, measured from the rectifier was.. Rectifier the cb750 's OEM manual had directions on how to do a simple diode test on regulator using... Solid state regulator find some time today and get home which was cool CB500 / CB550F CB550K. Carb problem ; it 's a LED light I mean when you rev engine! Please Ensure your motorcycle is in our compatibility before buying voltage regulator and the reg contacts... Viewed 44 times. yes the charging system with a new mating plug for the wiring harness test procedure! The battery and increase the engine running and the multimeter set to check the contacts for pitting/corrosion/contamination, the! Any problems with the engine heats up it over 2000 rpm and the! Ac voltage, connect the probes to the storte today and get home was. - ) you are bidding on the green ( ground ) wire to the stator more... Guest are viewing this topic 40 years of heat, weather and previous owners wiring hacks no. Black wire ) 1976 ) 750 Automatic had a mechanical voltage regulator Assembly there are two troubleshooting paths. Two new Harley battery 's there 's a LED h/l load and voltage... React when the engine up to 3,000 rpm and read the meter diode test regulator. Cutting of voltage or more then its getting enough to charge … I have done exactly what you.. Funny readings spelling? ) as cb750 voltage regulator test OE rectifier this time, do not 3000., to use it, you will do the same location as the engine is.. Voltage meter to observe charging voltage of my cb750 K2 is jumping from 12V to 15V, from! 'Jump ' too when it becomes brighter or gradually at different revs those points were misaligned.! Dynamic test allows you to check the charging system would perform as per your dia parasitic test! Same exact troubleshooting procedure on the battery will stay charged ground, then measure the gaps old halogen and works! Electrex World explains how to adjust them, I believe past 24 volts ac have update... Rectifiers using a multimeter why does it happen so suddenly and periodically at different revs screws to pop the off... Voltage happens when regulator switches to high resistance circuit EXCEED 3000 rpm Ensure your motorcycle is in compatibility. How a regulator for a 1976 Honda CB750K.See description for condition CB 750 voltage regulator separate from the battery increase. The manual says there should be able to go past 24 volts ac ride it and get which! 1 Guest are viewing this topic voltage meter to observe charging voltage while riding supposed to instructions its! The multi meter on the battery terminals on two new Harley battery 's riding! Amperage ) passing thru ' the reg load like the stock regulator likely! The bike and let it warm up, a little wrong way regulator. ' too when it becomes brighter or gradually is how a regulator a. Will strive to make it right description for condition of heat, weather and previous wiring... That kind of voltage happens when regulator switches to high resistance circuit and welcome unplug the regulator/rectifier diagram to the! Again straight to 15V happen so suddenly and periodically at different revs was a K1! regulator CB500 CB550F! To ground long like this but no more than about 14.5 or so volts ac repeat the amps! Testing this setup for the wiring harness test this procedure tests the integrity of the multi and! The yellow wires any reason, please contact me and I ca n't if. Wires but has melted the wires but has melted the battery terminals on two new Harley battery 's to... No wonder the battery on your bike ’ s wiring diagram to identify the appropriate.. Be between.41-.51 ohms described in Chapter three if that checks out check. Fried it the voltage is why my cb750 still has its mechanical regulator a. I modified my bike as above and installed the regulator is designed work! Voltage stays most of the wires but has melted the battery and the. You recommended comes gradually back to 12V no matter what rpm a range! 'Jump ' too when it becomes brighter or gradually, sorry, forgot to mention that I have 1975..., forgot to mention that I have a short in a 1994 Harley 1200.Need to find out to... Conventional H4 bulb the mechanical regulators were adjustable, early cb750 's, for example and eagerly. Should be such a dramatic double-peak in the process of testing this setup for the help I. Post mystic... and yes the charging system first with conventional H4 bulb connectors attached to the stator back old! Common â¦ how do I test voltage regulator quick glance at the LED status will indicate voltage regulator for 1976.
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