I have an 04 1500 Ram that does not have the plug under the dash for the brake box. I am installing the 7-round plug on the rear and I need some help wiring in the brake box. I know the white goes to ground,black to the battery or fuse box and blue to the brake box. But I need some help wiring the box to the truck. How should I wire to the brake control sensor? What other wires will come on the box? Thanks in advance
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You sure it's not taped up to the parking brake bracket somewhere? I have heard of them hidden up there before.

 

I took it by the dealership and they confirmed it does not have the plug