I just went to work (John Deere Dealership) and bought 2- 3X5
50 watt Halogen Floods, drilled 2- 1/2" holes in the bottom of my rear hitch assy. and bolted them on there. I ran a wire to a switch in the cab. Now I can turn them on when needed. They give 100 times more light than the stock backups, PLUS I can turn them on when I need additional light for other things.
Total cost: About $50 and 2 hrs of time. (I work slow in the cold)