1981 Honda CB 750C electrical issue

DillonDeland said:

Oi, I am new to the community and am restoring my first bike. Having an issue and could use some input. Went to see if the bike would turn over and it did but the headlamp doesn't work now and no power to tail lights either. Horn works though. Where would you start? Voltage regulator or stator? Thanks

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Do you own and know how to use a multi-meter, have the electrical schematic diagram and service manual and know how to read it all or need any assistance with that part? Because electrical trouble-shooting motorcycles all starts there. and yes you would start from the source, so that would be you stator output. OEM service manual makes it super easy and It's all interesting fun stuff, if it's not cutting into your riding season.

Horn does draw a lot of power so that is an indication that at least that has a decent ground and battery feed. With a meter or even better an oscilloscope you could literally put a value on how good every part or assembly is working.

Restoring it cool ! will be very expensive if you need to replace the 4-pipe exhaust.

Wait 1981 thats a twin cam, thats not even old! the exhaust won't be horrendous expensive.. lol

If you use a meter it can tell you exactly which wires need that cleaning treatment or what switches are ka-putt or just have a little more resistance then they should.

DillonDeland said:

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Good point, glad I read your post tonight, was just looking at a stator/regulator combo. I may still replace it at some point but I will check what you suggested before I throw parts at it. Thanks again.

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You might replace the regulator with something different, but you won't be changing the stator with anything other then another one the same :| that's what the meter is for, you need to measure the stator outputs first, thats where the power is generated. there will likely be 3 of them all same colour.

oops duplicate post

Site people, your new format and software sucks!