Topic: cb650z electrical issues. JUST the headlight works...

[Eduard]

Hi there, i bought the bike running in good order. It has stood for a while since then, done some work but havent really touched the electric stuff. Maybe moved some things a bit around because i installed a new seat but i have been pretty coutious not to disconnect or pinch anything.

Anyway i have connected the battery again and now only the headlight comes on... nothing else. Blinkers dont work, speedo doesnt get power. Ive checked the 30amp fuse and the 4 glass fuses but they all are ok. Brakelight is disconnected at the moment so not sure if that would work.

Anyone an idea what that could be?

thanks, Eduard

[RAFster122s]

Disconnect the 30A fuse, odds are good you’re going to find it is blown/broken.
Otherwise start checking your voltages from ignition switch and branching out from there…

[Eduard]

thanks. will try tonight. I think my mate who was present checked that one but im not 100% sure...

ive checked some voltages and they looked pretty good. if the 30a is not the problem ill get a bit more methodic in my approach

[fizzlebottom]

thanks. will try tonight. I think my mate who was present checked that one but im not 100% sure...

ive checked some voltages and they looked pretty good. if the 30a is not the problem ill get a bit more methodic in my approach

The old strip-type fuses like the main 30a one will corrode and crumble eventually. It might look fine and show continuity on a multimeter, but can easily give up the ghost when you're trying to crank the motor. There's no harm in replacing a $2 fuse.

Additionally, clean all ground connections til they're shiny.