Question about 1991 Jeep Wrangler

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Fuel gauge /tank

Need to know what color wires the fuel pump tie into?[black,tan,orange]

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  • yadayada
    yadayada May 11, 2010

    Black is ground, and orange is 12 volts, fuel pump only has 2 wires, any others are the sender. Get a test light and test the wires, have someone turn the key to start while you test the wires.



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I need to know the color of the wires leading to the fuel pump.

Posted on Sep 10, 2008


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Does anyone have any idea where the fuel pump relay is at on a 1987 GMC Sierra EFI pick up truck and how to know if it's the relay or the fuel pump that's gone bad? Any help will be appreciated!

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The surest way to test the fuel pump is to hook up a voltmeter or test light on the pump wire at the fuel tank connector-on the harness side, not the tank side. Then see if the pump wire has power with the engine cranking over. If it has power, but won't make the pump work when connected, then most likely your pump is bad. Turning the key to ON will also make the pump come on for 2 seconds (to prime the system), but it is easy to miss that signal, so check for power with the engine cranking.

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1 Answer

Fuel pump wire color

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the wire from the fuel gauge on the dash to the sending unit in the tank is purple. Not the pump.
The wire from the pump to the pump relay is gray.
The wire from the relay to the 10amp fuse is purple.
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And the ground wire for the relay is black-white.

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1 Answer

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1 Answer

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This should be what you need

Constant 12v+ Wire: Green/Violet
Switched 12v+ Wire: Yellow/Black
Ground Wire: Black/Light Green
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