I had 3 electrical issues with the Harley project. The horn didn’t work, I had no indicators, and the brake light seems to be stuck on. I’ve got to set up the new ignition unit, but that’s just a matter of screwing it in to place when I’ve put the barrels back on and can judge top dead centre. Anyway, the horn was dead. I read through the trouble shooting in the Clymer manual. It is brilliant manual. A step by step guide. I tested the circuit from the switch to the horn, I had connectivity. I wired the horn up to the battery, the horn worked. So it had to be the earth wire. I rigged a wire to a solid earth point on the frame and I have a horn! It doesn’t sound like much (the achievement, the horn sounds fine) but it’s my first ever win with electrical diagnosis, so I was thrilled.
The indicators were a puzzle. The bike didn’t have any so I bought a set then tried fitting them. There was only one wire to each indicator on the bike. I attached it and fitted them but couldn’t find an earth. It turns out they are self grounding, but they still didn’t light so no power was getting to them. There are cut wires in the headlight that correspond to the power lines to the indicators in the wiring diagram. Rather than try to rewire the bike I looked it up and found a flasher module kit. It was a bit scary to fit as I had to cut off a connector. The wires leading to it were so short I would have been been in a right state if the new kit hadn’t worked. I checked all the wires in the wiring diagram to get them to correspond to the kit wires and …
So, so happy. Two electrical wins! Now all I have to do is look at the brake light units. If there is any trouble with them they are only a fiver (each) to replace. Then I’m basically done with electrics and all I have to do is stick the barrels back on. I could be riding it to work in a fortnight! Probably not. I find it hard to imagine that it will be all done and I can just ride it.
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