Installing Tekonsha Prodigy P2 Brake Controller # 90885 in 2002 Dodge Ram Cummins Sport Edition

Question:

I understand the installation of the controller but i can not find the wire to which i hook up the 7 way plug in. i have traced the wire from the control box to under the truck where it hooks into a connector and then run along the frame when it comes to the end of the truck there is no blue or red wire to which i think is the brake control and hot wire where can i find these wires that get connected into the 7 way. i drive a 2002 dodge cummins sport addition. 1. the first pic is off the back end of the truck i dont know which wire should be hooked up to the 7 way or if the right wire is in that bundle 2. the second pic shows where the big blue and red wire which is marked in side the cab as the brake controller and hot wire. on the top but then plugs in as shown but then the wires do no show up at the back end.

asked by: Jordna

Expert Reply:

The Tekonsha Prodigy P2 Brake Controller # 90885 and the quick-connect harness # 3020-P that you referenced are a correct fit for the 2002 Dodge Ram that is equipped with a factory-installed 7-way trailer connector at the rear of the truck.

If your Ram pickup has a 4-pole trailer connector but not a factory-installed 7-way trailer connector then you will need at least one additional component to complete the brake controller installation. You will need the # ETBC7 Universal Installation Kit for Trailer Brake Controllers to provide the vehicle 7-way socket, circuit breakers, wire and connectors. This kit includes a tester to help identify the functions carried by each wire on the vehicle. I have linked an installation video showing this kit in a 2001 Ram.

If your Ram does not have the 4-pole connector either, you will then also need a wiring harness to provide one. Once in place the 4-pole plugs into the 7-way that is supplied in the # ETBC7. I have include a link to our page for wiring harnesses where you can use the drop-down menu to select the style of Ram you have to see suitable wiring harnesses. If you have a 2500 or 3500 you can use # 118329 which is a plug-in harness that requires no cutting of wires.

I also linked articles that cover the process of installing a brake controller and the ETBC7.