that sounds like a sales pitch for the adapter to me... i dont have a whole lot of experience with trailer wiring.. but ive wired just about everything else you can think of in a car and well.. brake lights and turn signals are just wires and switches.. no computer interaction that i know of.. the wiring tone offers is just connected in the tail lights and ive had no ill effects from it (of course i also havent hooked it up to a trailer yet) but ill go out on a limb here and say his trailer wiring.. like all of his other products.. works well