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Re: 1990 peterbilt wiring diagram
Posted to HD/Fleet Forum on 5/15/2015 1 Reply

Hi Matt, Cant seem to get the wiring diagram from paper to inside the computer, scanner not working. You should have a breaker on inside of frame rail near starter, some were black square about 2"x3" or round looking like a hockey puck, powered from starter po... Login to read more.

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