which wiring harness?

[smalldog]

I am trying to put together a 704 binnicle and a single switch with lanyard and a tach/trim guage to a new F65TJR...Where do I plug in on the motor?
It has a trim switch on the side ** the motor that I would like to have working as well as the remote on the control.

What harness do I need?

[boats.net]

You will need the main harness, available in different lengths:
6X3-8258A-00-00 16ft
6X3-8258A-10-00 20ft
6K1-8258A-40-00 26ft
61B-8258A-01-00 31ft
You can get the 6YR-W0035-E2-00 Multifunction tach kit that has tach and trim gauge and comes with wiring needed to install gauge.