daydozer

Hello everyone, Normally just a lurker, now a first time register/poster . I have a 1980 XS400 Special II that is in great condition and has 9k miles on it. Recently the original headlight died and I was unable to procure another original. I bought the aftermarket headlight kit and installed a standard bulb. Everything worked ok for a while, so its possibly unrelated. My brake light gets stuck on, my pilot section lights (neutral, blinker, oil), blinkers, horn, and headlight do not work. If I vibrate the engine by revving it up the will occasionally come back on. Should I be looking at grounds? I've checked all the visible grounds I could find and they seem ok? I've read other threads with similar issues but havent been able to correlate anything yet.