Well here is a very simple solution.
Installs with two zip ties or hose clamps
Can be spliced into the factory cargo light to work off the switch
The complete kit includes
1 roll bar mount
1 new kc cyclone v2 rock light white (flood lens)
Hardware to mount the light to the mount.
14g wire and 2 posi tabs to splice into the deck lamp wiring. Zip-ties to secure the wire to the roll bar.