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Old 10-22-2020, 10:13 AM   #2
LockDoc
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Join Date: Aug 2006
Location: Montezuma, Iowa
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Re: What are these wires for ? 72 GMC

Quote:
Originally Posted by Canadian 72 C15 View Post
Help
Can anyone identify what these wires and plugs would be for?

72 gMC with 307 and 4 speed floor shift.

It now has a 305 and is not using these anymore. They are all on the same harness passenger side are near the firewall.

One green wire on its own with a plug and loomed

One semi thick red (power I assume) with a plug

Then one 3 wire plug with a blue, green with a white stripe , and brown with a white stripe.

The Green one would be for the temp gauge sender (should be in the head by #1 spark plug)

The other ones look like Alternator wiring.

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