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Old 11-05-2009, 04:57 PM
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PonchoV8
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Fuel pump wiring?

My pump (one inside the frame) is hard wired hot to the fuse panel--88 F350 dual tank 4x4 351, 5 spd. I got under it today to find two wires that are cut and hanging out of the trucks wire harness. One is RED w/ BLK stripe, one is BLK only.

The RED w BLK has momentary 12+V power when key is turned on with multimeter's black term touched to the frame. It seems to be about one second and then goes dead. No longer than that. The BLK sees no voltage potential. If I connect the multimeter's terms to the RED/BLK and BLK wires, I see the same 12+V power on for a moment.

This appears to be the original fuel pump wiring. Can someone verify the colors for me and that it powers down after the initial pressure up at KEY ON?

Thanks,