You are here:

Motorcycle Repair/1979 Yamaha 11- special- lighting problems


Hi Gary. The bike has two problems. The first is the headlight. It worked on dim only for months, then quit completely. Replaced sealed beam to no avail, then the signal lights quit working. I only have tail and a brake light that works. All bulbs look good, and I find no blown fuses. I know parts are getting harder to find. Are there some replacable relays for these problems? Thanks.

Buck, Some of the Yamaha bikes had a headlight relay that kept the headlight off until started to direct more power to start. But there  may be a ground problem as with the turn signals. Do the front lights stay on and also flash when using the turn signal,the back only flash. These kind of work when the bulbs and the circuit is large eough to take the current to the ground causing the flasher to trip breaking the flow momentarily. Check all the grounds you can find and clean and retighten them.

Motorcycle Repair

All Answers

Answers by Expert:

Ask Experts


Gary Blake


I have built from ground up race winning motocross bikes and atvs as well as atv,s for flat track and TT racing. I am starting to take on the utv challenges now for racing. This is a new area for me so Im in a learning curve.


I have extensive experience in off road motorcycles and atv,s.I also work on street bikes and personal watercraft, Some experience was self taught and some was factory trained. I have been working in the powersports industry since the mid 70,s I hope I can help. Thanks Gary

Was a sponsor for K.O.R.R.(kansas off road riders) and now I am working with ROMEO,s (retired old motorcyclists eating out)and was in charge of the Quad Wars for the monster truck series in Central Kansas

Factory trained Kawasaki Heavy Industries. Factory trained GasGas motorcycles and atvs worked as a technician and was as a dealership owner.Kaw.Suz,Honda,Aprilia,Arctic cat,See Doo,Can Am, Bombardier,Yamaha,GasGas,Qingi,TM,Moto Guzzi,Harley,s

©2017 All rights reserved.