I am being told the same thing. That the plug to go to the brake control does not exist at this time for resale and that my after market unit would work if I wanted to hardwire it in which I don't.
Just look under the dash on the drivers side near the kick panel. There should be a taped up harness with a large plug and a small plug. If you have both plugs then you can connect directly to the oem controller. if you only have one plug, you will have to wait for the "kit" that was supposed to be available last fall.