Trying to find a factory or sideline harness that will plug into the unit and allow easy wiring of the brake contoller. Local dealer was unable to find one and the Napa doesn't seem to know either. Am I going to have to hardwire it and is there anything I should know.:confused: ?

You are going to have to hardwire it. Here is a link to some instructions and pics:

http://www.wkjeeps.com/wk_towing.htm#CONTROLLER