Tilt and Trim Gauge Installation

I have a Yammy 225 TXRB on an Alumacraft Trophy 200. No Trim / Tilt Gauge. I have purchased the correct Faria Gauge and now want to install but cannot find where to hook the sending wire from the tilt trim assembly at the stern to the back of the gauge.

Guidance?

[boats.net]

Yamaha's Trim/Oil harness is 68F-82553-70-00 that will connect to engine for trim sender. To connect to Faria gauge you will need to cut the pink wire off gauge end of 68F harness(at 4 prong connector) and connect pink wire to Faria sender terminal on gauge for trim gauge to work.