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Author Topic: Battery indicator light to voltmeter  (Read 3400 times)

Offline Banjobend

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Battery indicator light to voltmeter
« on: March 25, 2025, 02:08:53 pm »
Hey all, I have a 78 c20 and Im dropping a new engine in it. Its a vortec 383 and I will be running the serpentine belt setup and 4 wire alternator. My current cluster has only idiot lights but I have an original with all gauges. Looking online I only need one wire to run the 4 wire alternator and my setup currently has 2, one signal wire and one to the charge indicator. Im wondering if I can reuse the charge indicator wiring to run the gauge or if I should leave that out and wire a new switched source to the gauge.

Ive attached a diagram of what I'll be running at the alternator, everything else is stock GM.

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Offline VileZambonie

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Re: Battery indicator light to voltmeter
« Reply #1 on: April 09, 2025, 05:14:45 pm »
SI to CS pigtail. If you are going to gauges you need a resistor https://www.novaresource.org/alternator.htm
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