Yamaha 60hp Trim Wiring

I have a 2000 model 2 stroke 60 hp. I have just installed the digital speedo and tacho into my boat. They were purchased new and came with the wiring harness. I am wondering if anyone knows how to wire up the trim from the motor to the gauge as I cant seem to find anywhere it might connect to. A wiring diagram would be great.

[boats.net]

It requires a 68F-82553-70-00 wire harness that connects to the two 4 prong connectors on engine and connects to 4 prong connectors on tach.
Wire Harness connections.

So the harness would have 2 plugs at the engine end and 1 plug at the gauge end. Is that right?

[boats.net]

The gauge should have two 4 prong connectors as well.

The gauge has only 1 plug on it. I will post a pic of the back of the gauge tomorrow.