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I've been working on the wiring of my little Rusty and have just got into the headlight bucket.The parts fiche shows an item called "washer headlight case" used as a nut to hold the headlight in place (No 466 on the diagram) (Attachment Link) This had an earth wire attached (for the indicators as on the CB750K, I'm assuming) but I cannot see the reason for this as the indicators must be earthed on the mounting bracket – at least mine are.Can anyone confirm this, which means the wiring is un-necessary? If so also confirm the thread on the mounting bolts; I think it is M10x1.25?Sean
If my memory serves me correctly, all the green earth wires from all the other fittings in the shell finish up in a multi connector, and this could be the main earth lead return as the shell is plastic. If I'm wrong, sorry. Blame Anno Domini, a good meal, and alcohol. Regards, Mike.
I connected the two wires, and ..... everything worked! ;DExcept one front indicator. I decided to check the bulb and (this took a little while as I got distracted). The bulb was OK. I switched the two front bulbs anyway, and ... nothing worked!! Well not quite nothing; when I indicated left, the right instrument panel light worked, and when I indicated right, the rear left indicator worked.I spent ages checking everything, and then noticed that the voltage at one point was only 8,5V. The battery I was using is on old one with a bit of history, though it does seem to hold a charge when not stressed. I'm not sure why a low voltage would cause the strange happenings, but I put it on charge and moved on to other things. I will ry again tomorrow.Oh, I did find out that the wiring and feed to the coils is OK; with the kill switch on "Run" the coils got quite warm. Which may explain my flat battery!!Ah well.
We’ll shit, your bike is cross eyed!Just out of curiosity, what was the issue that led you to work on the wiring?
Ever seen an older car when someone indicates AND the brake light comes on (rear view) then the whole light panel flashes dimly ?Ordinarily that's a compromised earth on one of the lights, the activity then tries to scavenge an earth through commonality with the other lights under the load the circuit is running at, making it look like a complex unexplained problem but in reality just an earth drop out.As Alex mentioned earlier, worth tracking each component's earth back to battery to identify the fault.