Hey @Drover remember you now have a very modern motor vehicle, do not attempt to hook the brake controller to the brake light switches (yes I meant switches) as the thing runs the worlds most reliable C-Bus system, take the feed to the controller from the rear preferably from the brake light supply to the trailer plug if you are not 100% sure, I still recon your mad not fitting a Redarc unit the knob changes colour with voltage so no need to fill the dash up with American boxes (we used to be the Tekonsha importers/suppliers to Australia in another life)