Quick Question on Wiring up the trailer Hitch

I got my new Factory towing package yesterday. I have mounted the hitch and everything looks great but now I want to wire up the trailer lights using the factory 7way plug that came with it. It looks to me that just to get the lights working all I need to do is crimp those 4 "blunt" wires to the ones under the car and ground it with the grounding ring. Is this correct? I really have no use for trailer brakes so would it hurt anything for me to cut the other two really long wires coming off that 7 way plug (the ones that go the length of the vehicle and up to the BEC under the hood?) I just want the basic tail lights, brake lights and turn signals to work on the jet ski trailer.

Also is there an adapter that GM will sell to plug a standard trailer plug into the receptical plug on the hitch? Or do i have to buy a special end and wire it to my trailer to make it plug in?


Thanks for any response, i'd like to wrap this project up today.

ok pardon the stupid question, I got it all figured out now as far as the wiring..

Wheres the best place to get the adapter so I can plug my trailer into the "outlet" on the hitch?