I have a Switch Pro in my engine compartment. It is wonderful. It's what I used to turn the things off and on.
1) Figure out your wiring. Here's my sketch. Note, in my approach, I used two different types of wire - both runs shared a common ground but had separate power so I can turn left and right on independently. You can simplify it if you are ok with both sides coming on at the same time.
I used the following for inspiration:
https://www.youtube.com/watch?v=KZUW...ature=youtu.be --> this is where I got the wire and clips to hold the wire in the aluminum extrusion
Baja Designs 2.0 Rock Lights Install and Review on 5th Gen 4Runner --> where I got the idea for how to soldier the wires
2) Put up the Sherpa mounts.
3) Take detailed measurements ... I did all the wire and soldier of the lights on the garage floor after I had measured how long each wire needed to be.
4) Join the BD rock lights to the wire you have chosen. I used
these connectors - all you need is a heat gun - and
this heat shrink tubing to waterproof the whole thing. I did it in three sections so that there was overlap everywhere to guarantee water could not get in.
This is the wire I used.
5) Once you have the harness created - leave lots of extra length for the run to wherever your power is coming from - put it all up on the roof. I
used these to hold the power wire to either the extrusion cross bars or the side of the rack. I can't remember if I used 3/16 or 1/4.
6) Run the wire down the window gutter
7) Attach to whatever you got. In my case a switch pros.