Initially installed into trailer wiring, kept giving me trailer connected message and removed my backup sensors and lines. I had to wire into tail lights (except I left ground on the trailer connector) and needed to pickup a 16ga wire, use a butt connector to crimp them together and extend the wire over to the right turn signal for the blinker. Not difficult, look up the wiring guide for the truck, but easy enough to do. My first ever electrical work on a vehicle.