I've got an 89 F-150 dual tanks. Getting no power to tank pumps. High pressure pump runs good when key turned on. Have checked wires to fuel selector switch and no power there. Since high pressure pump is running I'm thinking there's a bad splice but how do you find where it is? On the wiring diagram it shows there's a splice (marked C277 just past inertia switch) but where is C277 located? Anybody know? Also, the diagram wire colors don't quite match my truck
note: Just FYI the wiring diagram doesn't quite match my truck. Not unusual I'm sure. The diagram says the power wire from inertia switch to high pressure pump and fuel selector switch is PK/BK (pink/black) but no pink black wire. There's a red/yellow wire that matches the size of the red one (red to fuel pump) coming off the selector switch. I'm guessing that's it.
