Ok, here's the dilemma on my SL125 rebuilt bike. When the bike is running and you turn the lights on, it pretty much kills the engine. With the engine off, I can cycle through high and low beam and things seem to operate normally. With the ign off and a volt meter connected I have 6 volts, key on goes to 5.8 v and then with the lights it drops down to about 5.6.v.
If I remove the bulb it all runs fine, and is charging ok. Cycling the light switch makes no difference to anything at this point.
I dont quite understand how the draw from a 6v headlight is enough to effectively stall the engine?
Maybe I need to recheck the rh switchblock which has kill switch and light off/low/high.
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