Or just run down the a - pillar and to the passenger side where the power "pit tail" is available. There is a switchable power lead as well as a ground lead. Use the supplied "telephone" cord with its fused connection box. There are many posts and pics on here about how to get the power.
I went down the drivers side but also had Raptors to power so kept everyone together. :cheers:
I hardwired mine to the mirror about two years ago. Works fine, except unit restarts every time I put it in reverse. Take off the wire clip, and check for power with the key in the on position, and that'll give you the positve lead. there's lots of grounds, but use a tester to find. It's real easy.