The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Installed '90 GM Factory EFI tank, '72 Blazer Factory gas gauge is pegged past full?

**damnyankee36** · 08-13-2017, 06:50 PM

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?

08-13-2017, 06:50 PM	#7
damnyankee36 Senior Member Join Date: Sep 2002 Location: Alamogordo, NM Posts: 679	Re: Installed '90 GM Factory EFI tank, '72 Blazer Factory gas gauge is pegged past fu 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?