Mines attached to the OPS rear screen. I drilled holes and used tie straps too secure it. If you don't have the rear screen you might look at putting it on the back of the tailgate on either side of the latch.photo.jpg not a great pic but you get the idea.
I got a Squeeze Clamp from Tractor Supply and just put it on the Rear Bumper Guard when I need it. I got one of those LED Emergency Lights off eBay cheap, and attached it. During the Night I just press a button and it really lights it up and makes it visible from a long way up the road.
Jonny2guns4u
"I won't be wronged... I won't be insulted... I won't be layed a hand on... I don't do these things to other people and I require the same from them."