I had the Voyager installed in my truck from a popup trailer we use to have. I always thought that the brakes grabbing hard sometimes was a result of the trailer brakes and not of the controller. After towing our TM the first time and having the brakes lock up periodically while traveling I asked the question in this forum if it could be my controller. EVERYONE said it probably was, I bought a Prodigy installed myself using Wayne’s suggestion of matching wires and have had NO issues since. I bought mine online from the following RV site.
Bruce
http://www.adventurerv.net/tekonsha-...ol-p-1432.html