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Re: starter kicks in when I plug the head light in

Posted: Wed Sep 05, 2018 12:37 pm
by gspd
I doubt that you need a new ignition switch...
...your symptoms sound more like something is just wired wrong. That's what I was trying to establish.

I didn't look up your bike's actual wiring diagram, but I don't recall any BMW's having a white wire going to the ignition switch.

Could also be a faulty load reduction or headlight relay, or most likely (very common) a bad ground on one of those relays.