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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Mikeymike383 on November 28, 2015, 08:55:51 pm

Title: what is this and what does it do
Post by: Mikeymike383 on November 28, 2015, 08:55:51 pm

it's behind the dash of my 73 but idk what it is

Title: Re: what is this and what does it do
Post by: LTZ C20 on November 28, 2015, 09:23:54 pm

That looks like the wiring harness connector for the dual fuel tank switch on trucks with dual fuel tanks.

Title: Re: what is this and what does it do
Post by: Mikeymike383 on November 28, 2015, 11:19:40 pm

do I have 2 have it hooked up 4 my fuel gauge 2 work if I'm only running 1 tank? Dr side tank is removed?

Title: Re: what is this and what does it do
Post by: LTZ C20 on November 28, 2015, 11:44:25 pm

There are a few questions that need to be answered.

First off, does the truck have dual fuel tanks?

Title: Re: what is this and what does it do
Post by: Mikeymike383 on November 29, 2015, 09:23:07 am

no po took out 1 tank

Title: Re: what is this and what does it do
Post by: LTZ C20 on November 29, 2015, 10:58:19 am

Ok. So, you have a dual fuel tank truck that is missing one of the tanks.

Question 2, is there anything under or on the truck that is left from the dual tank setup? Like wiring to switching valve, the switching valve itself, gas tank mounts, fuel filler hole on side that is just a hole now, fuel lines on the crossmember to feed the fuel from one side to the switch valve, the actual switch that that harness goes to, it would be a square hole in the dash next to the ash tray. Is any of this still there?