Trim & Tilt question

[jorgeinmiami]

I have a Merc Black Max connected to a Merc Binnicule.
The harness starts the engine fine
Coming out of my binnicule the is a 3 wire set the finishes with a plug that goes to something.
I imagine that this is for the trim to work from the binnicle.


I imagine that I need what ever plugs into the 3 wire set/plug and that that goes somehow to the engine. Selenoid / relays??????

So what do I need to get it to work?

Please enlighten me