Quick background - I am replacing the rectifier on the Merc with a Honsda Rectifier / regulator unit after I hooked up a voltmeter to the original kit & found I had a 20 odd volt charge!
So, having recieved the unit, I can account for all the wires bar one. I have looked at umpteen websites reportedly showing Honda wire colours, but none show a plain white.
Single black with eye connector - Earth
2x grey with a male - from the coils.
1 x grey with a female - tacho connection
1 x white / black stripe with a female - +V to charge
(Those 4 being bundled in one loom)
The puzzle is I also have a white with a male that pokes out the bundle loom about halfway down. What is it? I reckon it's either an overheat or low charge signal wire - but as a male I expect it to take power rather than give a signal. But then it could be the overheat sinks voltage to the earth. Is it maybe a reference voltage for the regulator for a clever charging system?
Can anyone shed any light? I believe the unit is off a BF50.