Is Adapter Available to Install Prodigy P3 on 2006 BMW X5 with Factory 7-Way

Question:

Hello, I have a Tekonsha # 90195 brake controller that we currently use in our Jeep Grand Cherokee. We recently purchased a 2006 BMW X5 with factory hitch 7-way. I need a harness for the BMW so that I can use the same controller between the two vehicle. Could you tell me if harness may be available? Thanks,

asked by: Dominic M

Expert Reply:

You might have some wiring provisions under your drivers side dash since you have the OEM 7-Way on your 2006 BMW X5, but I wasn't able to confirm this in any kind of manual online. If the wiring does exist then you'll need another pigtail # 20127 and then Mounting Bracket Kit # TK5906. I also recommend using a circuit tester like part # PTW2979 to verify the different wiring functions. You will connect the pigtail as listed below:

Blue - 7-Way Output to Trailer
Black - 12V Power
White - Ground
Red - COLD Side of Stop Light Switch (only gets hot when brake pedal is pressed)

If you are unable to find wiring under the dash for a brake controller (you might need to reach out to a BMW dealer) then you can either route your own wiring using 10 Gauge Wire # 10-1-1 or use a different brake controller like the Curt Echo # C51180 which plugs into the 7-Way harness and the braking is adjusted via the app and Bluetooth connection for your Apple or Android device (provided it has the trailer light and 12V power functions active).

I have attached a diagram for brake controller wiring if you choose to hardwire and a review video for the Echo if this is the route you decide to go.