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  1. Dr88

    Help! ID this electrical component.

    About 99% done installing a new harness in a 1990 Suburban, and came across this small grey box with a circuit inside. It has the letters FEDCBA where 6 wires come out, which seems to be the same as the ALDL connector. 2 of the wires (Tan/BLK, and BLU/WHT)seem to go to the ECM, but the other...
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