Trim Display Problems?

[bullfighter18]

I have a F115 on my Parker 1801 cc and my trim display on the panel only shows full trim down. I have changed one part that the dealer said was cracked (made from plastic-and it was) but moving the trim sending unit by hand still won't change the display. Is this trim sending unit bad? Any ideas?
Thanks

[boats.net]

It could be a bad trim sender or wiring problem. Have trim sender tested with ohm meter.

[bullfighter18]

Thanks. I also saw another post looking at 2 pink wires off the sending unit not being connected. What are these wires and where are they located?
Chris