I've never used them for backing, my marker lights have always been more than enough to light up my sides at truck stops, and everywhere else...
I'd like to do that, but the cable runs through a hole in the fairing, and it isn't long enough to run behind. But that got me thinking, so I...
I'm currently leasing a new Freightliner, and for some reason it came with those bulbous work lights mounted on the sides of the fairings, even...