Long term bump/update. I added a tekonsha p3 brake controller to my TJ over the weekend and dialed in the brakes. When I built the trailer I used a 3500lb axle with Dexter spindles/brakes, but have not used them until now. My limited testing so far leaves me very happy with the results. I wanted the controller to be very visible/ accessible when in use but removable when I don't need it, so decided to mount it above the dash via a GoPro suction cup mount. It is ugly, but strong and can be installed or removed completely very quickly.