Something I am toying with is building a 2 small boxes that will seal flush up against the rear window so no light flashes back in the car and mounted 35 watt fog lights in them, that way when it's dark and can't see when backing up, flip the switch. Or, the guy behind you won't shut off his brights, flip the switch!!
When I finally get around to doing it, I'll post up pics and what not.
Tylor
Coulda used that the other night. lol