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Old 06-07-2016, 08:57 PM   #14
ghoticov
Member
 
Brand: Thor Motor Coach
State: California
Posts: 31
THOR #3870
Quote:
Originally Posted by bevedfelker View Post
If you look under the rear of you coach there should be a harness coming out of the 7-way plug. The factory should have wired the lights so there should be wires going to pins 1, 3, 5, and 6. They might have wired the 12VDC pin 4. They also should have put a blue wire on pin 2 for the brake controller; however, (as on my 2015 Vegas) the wire probably only runs to somewhere behind the fuel tank and is capped off.

If you are going to install the brake controller, you will have to wire it to the chassis electrical system under the hood for 12 vdc power, and a ground. You'll also have to wire in an in-line fuse for the 12VDC going to the brake controller. Then you will have to wire a (blue preferably) a wire for the brake controller brake signal and run it from under the dash to the engine compartment and then back along the chassis to splice in to the blue wire that they have capped off from the 7-way connector.

Do not be surprised if you have to completely rewire the 7-way because several owners reported when they went to wire in a brake controller they found the factory wiring for the lights was completely wrong.

You can buy a trailer simulator adapter that you plug in the 7-way and it will check the light wiring, power, ground, and brake signal (once you finish wiring it in.

If this sounds like a little too much, check with your dealer to have the brake controller wired in.
I took your advice and sought out someone to install it. I was right by the CW where we bought the coach. They took a look, saw that it was prewired and charged me a 1/2 hour labor plus the brake control and wire harness and the total came up to just under $200. So now I at least know it was done right (yes, I trust this particular CW...they have done work for me before). If I had tried to do it on my own, trust me... I would have made things worse. HA!
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