2003 GMC Sierra 2500HD "factory trailer wiring harness" Questions

...trailer brakes and need the wiring diagram The controller should have wiring diagrams with it. Also try http://www.etrailer.com/faq-wiring.aspx. The truck should have a harness that plugs into the ...

...factory harness/ trailer harness.Good Luck, Dana Spray electrical contact cleaner liberally in blug harness, scrub with brass brush or toothbrush. Try again. My next move would be to use a test light ...

factory 4 pin trailer harness is bad. My 2003 tacoma with factory 4 pin trailer harness was shorted out by the boat dealer... I have no trailer lights or stop lights.(drove home w/hazards) Does anyone

...factory installed trailer hitch and 7 pin wiring harness installed on my 2013 Dodge Grand Caravan. I have power to the plug but when I hook up my trailer none of the lights work. When I attach the ...

...trailer harness to it, every Sierra has a factory harness hook up in it, here is a link of your wire harness should be located under your Sierra. Thank you for using fixya and good luck. ...

...On factory installed trailer package. The harness is located on right rear quarter panel back (inside) The trailer connection is just below the bumper. This harness can be purchased at your jeep ...

...factory with a trailer hitch. If you are adding the hitch and do not have the four wire harness, the under hood wires from your brake controller are Red, connect to one of the studs under the ...

factory trailer wiring harness. Trailer lites work correctly with head lites off. Turn head lites on & left side of trailer stops working (right side of trailer only stops working). No turn, tail,

Factory Trailer Wiring Schematic I am replacing the factory 7 pin trailer plug on my Ram, and am looking for the factory schematic so I can rewire my factory harness to a new 7 pin receptacle. Thanks!

factory pre-wiring for a trailer. What is the best solution to hook up my trailer lights. for your trailer you need park light, brake light, left and right signal light. the best way is to tap them in