Question about 1978 Chevrolet C1500

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4 wire ac delco alternator harness dont know whats what.

My friend has a mid 70s C10 pick-up and put in a creat engine his old engine only had 2 wires this harness on the alternator has 4 what to do cant figure witch one is for charge and witch is for batt light

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  • carhob May 11, 2010

    if im getting this straight,youre installing a newer engine model are you converting it to fuel inj. if so get alt. for that motor,if not keep original harness



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  • wraburn Apr 16, 2010

    for anyone looking for the wiring schematic for a delco remy alternator with a 4 pin harness

  • jacndix Sep 26, 2010

    I've got the same problem, 4 wires and can't find out in any repair manuals , three small white wire coming out the pigtail, do you have a wiring diagram?



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