[NoBones]

If the wiring is correct, the pink wire comes from the fuel
sending unit to the gauge. With power on, put a jumper wire from the back of the gauge "pink" terminal and touch the jumper wire to ground. The gauge if good will peg to full.
Usually you can hold the other end of the jumper in your hand with out any fear of being electrocuted touching the ground.

Sorry I cannot help as to where the sending unit is on your tank.

See ya, Ken