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Short Circuit somewhere in Wiring Harness 140-160

posted by  marmiteman on  Tue Jul 13 16:28 CST 2021
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Hello Brickboard. I am really close to completion on my 74 145 wagon restoration, but ran into a situation this afternoon. Hoping someone can help. The fuel system has been completely rebuilt, but I have not put gas in the lines yet, because of all the other stuff I have been doing underneath that could make sparks and, y'know, fire. So, today I was ready to go. I went to jump the fuel pump relay and start to check functionality of the system, but, nothing. Turns out, I have a short to ground, somewhere in the harness between the positive side of the pump and the auxiliary air valve connector, (in the yellow wire). All other electrics in the car seem to be functioning, lights, radio, heater, signals, brake lights.

I guess I have two questions. One. What is the easiest way for me to find the short in this wire? And, two, could I just replace this one wire from the pump to the auxiliary air valve?

Any guidance, as always, very gratefully received.

Thanks Brickboard. Warren






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