Short circuit... Help!
I have an '89 Cobra Newport (john deere chassis - ford motortrain) and my 15a horn fuse keeps blowing.
I traced the wires and the cig lighter, map lights (on a dash switch) backup power for the radio, and the horn are the only things on the circuit. I traced the wires back from each device to the fuse box to a red wire plugging into a separate slot on the box than the fuse. I have a power probe and it reads ground and when I put power to it it pops the breaker on the probe. I cut the wire just before the fuse box and when I put power to the wire to the items, they all work fine but when I put power to the end to the box it pops the breaker. How can I find the short?? It seems to be in or before the fuse box but I don't understand how that could be. There are other slots on the fuse box that also pop the breaker when I put power to them but it's inconsistent. I've spent 8+hrs now tracing wires and I'm at a loss for what to do next. Please help.