Pilot Brake Controller Does Not Show Trailer Connected when Connected to a 2000 Dodge Ram 1500

Question:

I have a 2000 Dodge ram 1500 5.9L That had factory installed 7 pole plug, I bought Tekonsha 80550 Pilot and the 3020-P wire harness, Plugged it into the blue plug under dash on truck and plugged into the pilot, I get the little red dot to tell me the unit is installed properly but nothing else, Manual button does nothing hook trailer to it does not have the little c next to dot, I step on brake little red dot lights up but nothing else happens?

asked by: Dean

Expert Reply:

There are some tests you can perform to determine where the problem is. In the truck cab you will need to sever the blue wire several inches from the back of the controller. Then use a circuit tester such as # PTW2993 to test the end of the blue wire coming out of the controller. It should only have power when you apply the manual override (or brake pedal on some controllers). If it shows power at idle, then there is something wrong with the controller and it will need to be replaced.

If it tests fine, then reconnect the blue wire. Then move on to the truck side trailer connector. Many times, dirt or corrosion can cause a short in a trailer connector. Make sure the truck and the trailer side connectors are clean and free of corrosion inside and out.

You can test the brake output pin and it should only show power with the manual override. If it shows power any other time, then there is a short somewhere between the connector and the brake controller you will need to track down.

If the truck side checks out fine, then it could be the wiring to the brake magnets or the magnets themselves. Inspect the power wires to the magnets and look for pinched, frayed, or damaged wires and fix as needed. Make sure the ground wires are attached to clean and corrosion free bare metal surfaces.

You can visually inspect the magnets and if you can see the copper windings coming through the magnets will need to be replaced. To further test the magnets, you can follow the help article I have linked. I have also included some help articles on testing and troubleshooting brake controllers for you.

expert reply by: Michael H