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I have an '05 Dodge Ram 2500 I've Installed a Prodigy break controller and 4 wire and 7 wire multi hook-up at the back. My question is the wires coming out of the back of the truck is only for the 4 wire which is just the lights right where do the rest of the wires come from? I've crawled all over underneath that truck and cant find these two wires a red and a blue that are coming out of the hook-up.
Its a six wire connection not seven the wires are coming out of the brake control wiring harness up front but go missing between the front and back of the truck
If the truck did not come from the factory with a trailer tow package, there is no connector at the back you will have to custom make a harness & all. If it does have the tow package, the is a connection box on the frame rail to connect the wire from the plug.
wrench