The EATC connector C228C has 5 live pins (5,6,7,8,17) hence why I asked If the factory connector had 5 wires or 4. If it had 5 wires it means I need to ground pin 8 to the common ground for that sector of the truck. I know the other 4 pins go to the bottom connector, the 4th being the return wire pin 17 not the ground pin 8. I think the factory may have grounded pin 8 because the ford wiring book shows a black 20 ga wire.
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