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Hello, my name is***** you check for ground on the black wires at fuel pump?
Backprobe connector so you can monitor power while trying to start with fuel pump plugged in. Let me know what voltage reading is on both black/white wires while trying to start. Thanks.
The only explanation for having good power/ground while testing but not operating pump is a poor connection. It could either be a poor connection at fuel pump connector or somewhere else in circuit. Using a meter or test light doesn't put the same load on circuit as fuel pump so may not show the problem. Let me know how it goes tomorrow and we will go from there, it sounds like running a new wire may be fix. Let me know, thanks.