How to wire up a p3 brake controller

[Applegator]

We have a 94 Dodge Ram 2500. What is the best way to wire in the P3?

Thanks

 

[MEby]

I put one in my truck several months ago. Mine had the factory harness so all I had to do was plug it in. I would look to make sure it doesnt have one before you start your project. I dont know when they started putting in the factory harness, mine is a 98'. I IIRC the connector was located on the underside of the steering column, kinda hard to access but doable(wires and such in the way.



If you have to wire it in your self,



#1 you will need to wire one hot wire off of the brake switch to activate the p3.



#2 Two wires to run from the P3 back to your trailer connector. Heavy gauge wires although I dont know what size. One is going to be hot when the p3 is activated. the other I think is a ground wire.



#3 you will need to run a keyed hot wire to the p3, I "think".



#4 IIRC there will need to be a 2nd ground to the p3.



hope this helps