Mounted mine using the same bolts that mount the hard roof to the roll cage in back. I used Auxbeam cube lights and just elongated the hole in the bracket that came with the lights with a dremel tool so I could use the 2 screws that hold the roof on hold the light on also. They are below the top of the roof line and provide light to back up even when the bed is up. Very solid mount also, no vibration issues. I believe if you tried mounting them to just the plastic roof they would vibrate too much.I like that but I have the hard rear panel so that's not an option.
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