Here is a list of what we will need.....
Switches - if your not using what came with the lights
20' of 16 AWG stranded (black)
20' of 16 AWG stranded (red or white)
You can buy it in rolls from an auto parts store.
1 - 1/2" or 3/4" seal tight 90 degree connector (get from Lowes or Home Depot)
Picture of it:
I used a 1/2" and still have room for a couple more wires. If you plan on more wires to more devices later on then get the 3/4". I myself will just add another hole in the rear of the roof for more stuff.
Crimp on connectors (I have a large assortment, I'll bring)
2 rolls of electrical tape (get the good stuff)
Zip ties (30 - 8" or bigger black ones from Lowes or Home Depot) White don't look so good.
Split wire cover (the black plastic stuff to hide wires) I got it at Lowes 1/2"
Picture of it:
I have the crimpers and stripers, soldering iron and all the other things needed.