So yesterday morning, the low beam is not working, flip to high it works. So I think I'll work on it after I get home. Pull into the garage and notice the high beam isn't working either. Must be the bulb, I have spares, so I'll just replace the bulb.
Annndddd the new bulb doesn't work either, so I pull out the meter, high beam has 12v+, low has 10v+, at the plug. Obviously something is going on with the low, but why isn't the high side working?
I ended up connecting a jumper to the light, and the old bulb works. So what am I missing?
Just had this problem on a friend's bike. Check the plug connections for tightness (and possible light corrosion). See if there is any sign of melting of th e plastic on the plug. You may solve the problem by replacing the plug assembly. I have fixed them with a pair of long nosed pliers making a tighter connection on the pins.