They're Pilot brand from Autozone. IMO Pilot is by far the best brand of "budget" lights. The lights came with mounting brackets that are "U" shaped. They have two holes in the bottom for mounting and two on the sides to attach to the lights. I drilled small pilot holes into the bumper from the bottom then used self-tapping screws (not the mounting screws from the kit) to fasten the brackets to the bumper.
The wiring was easy. I ran a 14 or 16 ga fused power lead from the battery down along the framerail to the back. The lights are also grounded to the frame, so there's your power circuit. This light set doesn't have a relay per-se, just some fancy wiring. So once the 2 power leads were run I had to run two lines into the truck for the switch. I pulled them up behind the bumper then in through the door frame of the back hatch. When the hatch is open you can barely see the wires coming from the bumper/body seam and into the door frame. I drilled a small hole to pull the wires through, but its covered by the weather stripping. The wires then go behind all the interior panels, over the pedals, then into the center console where most of my other switches are. The switch is tied into a common ground I have for all my switches.
To sum it up, you have to make 4 sets of connections: Power/ground, switch power/neg + ground, light 1 +/- and light 2 +/-.
Good luck!