I think they are made by some company calling them Blazers = they are actually made to be used as driving lights for the front. From memory they were only about 25 bucks at Walmart or Pepboyz.
They are wired into the backup lamps, I dont remember the wattage. They really help out alot. Not too many factory backup lights work very well at night on the trail.

Why go around? When You can go over!