There is info on the site about the wiring but it should be two wires, power and ground.
The power IMHO should come from the Battery, 12 gauge wire with a 20 amp fuse, MAX.
Run the power wire to one seat than jump to the other.
Grounds, most people use the body of the truck, I like to run a separate ground from the battery.
Wiring is just two wires BLK - Ground and Blk/Wht - Power.