Headlight, brake light, and left turn signal not working

[divlukic]

I recently bought a 78 XS650 special with an almost fully dead battery, as the seller hadn’t ridden it in around 6 months. At the time of purchase, headlights, signals, and brake lights worked, only the electric start didn’t due to low battery. In the week or so that it took me to replace the battery with a new one, the left turn signal as well as the headlight and brake lights stopped working.

I was hopeful that the new battery would fix these issues, but unfortunately it hasn’t. I rode it about 70 miles back home from the seller, so I’m thinking maybe some things just got jostled loose on that drive since they were working when I was inspecting the bike. Does anyone have any ideas of what I need to fix/replace/check to get these lights working again?

 

[650Skull]

https://www.xs650.com/threads/continuity-testing-made-easy.49917/


Scroll down to post #7 for more electrical links for the loom/ switches

https://www.xs650.com/threads/xs650...-other-information-including-xs750-850.30569/

 

[Downeaster]

Random works/doesn't work issues are frequently caused by loose/bad grounds.

 

[Highpower]

I would take the LH control off and take it apart. On mine the wires had come unsoldered from the switch. Since the headlight and turn signals are on the same control assembly, it could also be in the wire connector in the headlight shell.