adjusting new trim gauge

[danny25]

I have a 2004 yamaha 50TLRD i installed a trim gauge made by teleflex morse. In the install instructions it says to adjust sensor if gauge doesn't read correctly. I can't seem to find the sensor or a way to adjust it. I have followed the pink wire but can't tell where is goes. When using trim guage will rest at 1/4 up from full down, and when you engage trim to go up motor will move only a couple inches and gauge will read full trim. Any help is appreciated

[boats.net]

The trim sender is underneath transom bracket, tilt motor up all the way and follow that pink wire to sender. To adjust loosen the 2 screws and rotate sender back and forth.