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Old 09-19-2007, 09:07 PM   #1
Texasdeere
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Join Date: Sep 2006
Location: League City, Texas
Posts: 732
Question Firewall Relay ID Question

1972 C10, 402, TH400, with A/C

I have a bad current draw on my truck. There is a relay on the inside firewall next to the steering column. It activates everytime I hook up the battery. It has three wires: Large Green, Large Red, and a Black wire. Does anyone know what this relay is for? The horn maybe?

There is another relay there too but it is not hooked up to anything.

Thanks
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