New wire harness for fuel pump

Tiny
BARNBOY
  • 1997 ISUZU HOMBRE
  • 167,000 MILES

1997 Isuzu Hombre V6, - Two black wires, does it matter which black wire is attached to truck black wires?

On the new wire harness for the fuel pump I'm installing there are two black wires and one seems to be a little thicker then then the other and the black wires on the truck are the same size.

Does it matter which black wire is attached to the ones on the truck?

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Saturday, September 8th, 2012 AT 12:45 AM

18 Replies

Tiny
SATURNTECH9
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If you get it mixed up the pump will run. In. Reverse and wont work correctly.

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Saturday, September 8th, 2012 AT 1:08 AM
Tiny
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How do you know what black from harness to hook up to what black on truck?

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Saturday, September 8th, 2012 AT 2:54 AM
Tiny
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That's gm wiring the terminal A is gray that's the power feed to the pump then terminal C is black which is the ground to the fuel pump.

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Saturday, September 8th, 2012 AT 5:19 AM
Tiny
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I see the letter designation for the different color wires on the old connector harness but there is no letter designation on the new harness connector to know which is the black ground wire?

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Saturday, September 8th, 2012 AT 5:36 AM
Tiny
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Use the old one and match it up with new to tell which letter is which. That's all you have to do use it as color key as well that's what I would do.

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Saturday, September 8th, 2012 AT 5:51 AM
Tiny
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The new connector on the left is a different shape than the old connector so I don't know how to match them up Because they don't line up the same.

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Saturday, September 8th, 2012 AT 6:07 AM
Tiny
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Did the new connector come with instructions like how to wire it?

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Saturday, September 8th, 2012 AT 6:11 AM
Tiny
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No it did not

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Saturday, September 8th, 2012 AT 6:14 AM
Tiny
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Are the wires to the pump color coated?

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Saturday, September 8th, 2012 AT 6:18 AM
Tiny
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Also what brand pump is it?

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Saturday, September 8th, 2012 AT 6:18 AM

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