I have a 2001 johnson 90 hp. I have found the trim harness, purple--I terminal, black ---Ground terminal, and white with tan tracer----Signal terminal. This is a brand new gauge and has been checked by jumping Ground terminal to Signal terminal and it goes to full up as it's supposed to. Now the problem is that when all wires are hooked up to their respective terminals the gauge shows full down when the switch is turned on. It stays in the full down position no matter what the motor position is. Any help would be appreciated. Thanks.