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Author Topic: My truck has the tank switch valve, but only 1 tank, how do I make gauge work?  (Read 3236 times)

Offline 1976Scottsdale

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My truck has the tank switch valve, but only 1 tank, how do I make gauge work?
« on: August 14, 2007, 02:39:25 PM »
My truck had dual tanks at one point and now has only 1 tank, but it still has the switch valve.  It is the one with a lot of wires running to it.  I am wanting to make my fuel gauge work, what wires do I need to move around and what colors are they?
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Online VileZambonie

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Re: My truck has the tank switch valve, but only 1 tank, how do I make gauge work?
« Reply #1 on: August 14, 2007, 04:10:46 PM »
All you need to do is flip the switch. Are you saying if you eliminate the switch?
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Offline stevens

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Re: My truck has the tank switch valve, but only 1 tank, how do I make gauge work?
« Reply #2 on: August 14, 2007, 06:10:39 PM »
The sending unit is on top of the gas gage so just run it straight to the one gas tank
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Offline 1976Scottsdale

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Re: My truck has the tank switch valve, but only 1 tank, how do I make gauge work?
« Reply #3 on: August 14, 2007, 11:10:30 PM »
My truck has had parts swapped here and there, so it no longer has the tank switch in the cab, nor the wiring for it I think, but the wiring and parts are still on the frame.  I am just wanting to find out what color the wire is for the fuel gauge, the last one I did was pink or red, so I can run a jumper wire to the tank from the splitter valve and make the gauge work.
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Offline DirtyLittleSecret

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Re: My truck has the tank switch valve, but only 1 tank, how do I make gauge work?
« Reply #4 on: August 14, 2007, 11:31:27 PM »
OR
you could invest in another gas tank/switch! 
My wife calls it her insurance plan...another tank to tap!
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78 K20: fresh 350, SM465, NP205, 4" Pro Comp, & working hard!
65 Jeep J300: 13.5:1 383, TH400, NP205, mostly NOS. 
88 Toylet LandCruiser FJ62: LT1, 4L60e, 3" OME, Aussies.
06 VW TDi: DD@72mpg.

Offline 1976Scottsdale

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Re: My truck has the tank switch valve, but only 1 tank, how do I make gauge work?
« Reply #5 on: August 15, 2007, 07:35:09 AM »
My wiring harness in the cab is not original to my particular truck and does not have provisions for the tank switch.
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Offline DirtyLittleSecret

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Re: My truck has the tank switch valve, but only 1 tank, how do I make gauge work?
« Reply #6 on: August 16, 2007, 03:45:56 PM »
Ah, now I got it.  Sorry I dont have a quick/easy answer for you :-\. 
Is there anyway you could do a Painless Wiring fuel wiring kit (dedicated/closed)?  That's what I'd check into at this point.
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78 K20: fresh 350, SM465, NP205, 4" Pro Comp, & working hard!
65 Jeep J300: 13.5:1 383, TH400, NP205, mostly NOS. 
88 Toylet LandCruiser FJ62: LT1, 4L60e, 3" OME, Aussies.
06 VW TDi: DD@72mpg.
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