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Motorcycle Repair/Right Front Signal Not Working


i have a wiring question.  i read your profile and hope you can help. 1976 cb550f right turn signal not working. all other lights function.

I took off right side turn signal to inspect it. While it was dangling with the key to the on position the housing brushed against the front fork and it turned on.  I held it to fork and it blinked off and on.

I then decided to unplug the left side turn signal and plug the wires into the right side harness inputs.  turned on and it blinked. i guess this means the wiring harness side is working because it made the left turn signal flash.

Kinda lead me to think there is a bad ground in the housing?  Or bad ground on the bulb?

Hello Russell,

Probably the ground wire of the lamp is cut, or the bulb socket is rusted.

You'll short this out by trial-and-error.

Best Regards,

P.S. In my profile is stated "POST-1985 Japanese Motorcycles plus KTM and Husaberg"
    No problem though...

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Lazaros Ampatzidis


I can help you on EVERY issue involving POST-1980 Japanese Motorcycles plus KTM and Husaberg. My field of expertise includes Engine, Transmission, Fuel system (carburation & EFI),Electrics and Electronics. Maintenance, repair and tuning. Road and off-road suspension tuning. Please don't ask me about non-Japanese Motorcycle, especially American built on which I have low to zero experience.


I'm a rider and hobbyist since childhood. 25 years motorcycle workshop mechanic.15 years motorcycle racing mechanic. In order of experience high to low:Kawasaki,Suzuki,Honda,Yamaha,KTM,Husaberg.

Hellenic (Greek) Technical School.Internal Combustion Engines Engineer. Automotive Electronics.

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