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Old 08-14-2017, 07:18 AM   #8
Okie528
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Join Date: Feb 2016
Location: Maryville, TN
Posts: 44
Re: Installed '90 GM Factory EFI tank, '72 Blazer Factory gas gauge is pegged past fu

Quote:
Originally Posted by damnyankee36 View Post
Sounds right to me. The two grounds are for the sender and fuel pump.

What happens to the gauge when you ground the purple wire?
Nothing, gauge does not move. I have even replaced the gauge, and the printed circuit just in case, but nothing changed. As soon as I turned the key it pegged just like the original.
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