What Parts Do I Need to Wire a Brake Controller on My 2004 Dodge Ram Pickup

Question:

My 2004 Dodge Ram has the 4 wire flat plug at the rear. It has the blue connector under the dash. What all do I need to do to get the 7way plug wired at the back?

asked by: Gilbert S

Expert Reply:

If you have a working factory 4-way flat trailer connector then you will need a brake controller, a brake controller adapter a length of 10-gauge (blue preferably) wire long enough to reach the rear of the vehicle and a 4 pole to 7 pole adapter.

The Tekonsha P2 Proportional Brake Controller # 90885, that you selected is a very good brake controller and uses the vehicle specific wiring harness # 3020-P for your Dodge pickup.

The adapter, part # 30717, and wire, part # 10-1-1, are installed at the rear and then you have to run the blue wire (brake feed) to the front of the vehicle on the driver's side under the hood and splice it to the blue wire at the connector on the wheel well (see link below). Use a circuit tester, part # PTW2993 if you need one, to be sure you have the wire that goes hot when you press the brake pedal. The 7-way connector will be installed by plugging the 4-way in and then wiring the other wires needed such as the brake wire (blue), 12-volt accessory wire (black), and the auxiliary power wire (orange) if they are needed.

If a hot lead or auxiliary wiring is needed, they would need to be connected to the battery via a circuit breaker. Those wires would then connect to the black wire and center pole on the 7-way trailer connector adapter, respectively.