Originally Posted by 4700nancy
I have a 2013 Ram 1500, have been trying to have a brake controller put in so electric brakes on Travel Trailer will work. Non of the after-market harnesses will work. Dodge does NOT have a harness. How can you build a vehicle that's meant to tow, and not be able to stop it? It has built-in plugs on bumper for both flat 4 and round 7 wires, but no way to hook it up to controller. This vehicle is not able to be used for it's intended purpose. Help
You should have the wiring under the dash if you have the rear wiring and depending what model but the controllers and switch panels are not available at every dealer. Some guys have had the dealer install them.
The two connectors for the controller should be up under the dash above the gas pedal but towards the dash front.
You are right in saying that the aftermarket controller adapters will not work as wired but with a one wire change they can be made to work.
I took a picture of the connectors in my 2013 SLT in one of the threads below.
Here are a few threads to read.