Trailer Connector Diagram

Can someone post me a diagram of the '99-'02 Z71 trailer connector please.

Thanks,
Bert

http://tinypic.com/ei2g51

Sorry for the dumb question but does your truck have the hitch and plug in the back and you need the pin out for each wire or do you not have the hitch and plug and need to wire from the cab? If you have the hitch and plug then all you need is a good brake controller with a four pin plug and you're in business. The plug goes into a jack under the dash behind a black cover that comes off with the removal of a large bolt. I got my plug at my local U-Haul.
http://www.hunt101.com/img/427638.jpg
http://www.hunt101.com/img/427639.jpg