Roll Bar!!
P.S. Pictures Are A PLUS++++++
I can only be so helpful with this, because I've never had a roll bar. But on my Ranger I did have four lights located behind the grille/in the bumper, so I've done the aftermarket lights thing.
I ran a 5-ga common wire from the battery for about a foot where I mounted an 80-amp main fuse. From there I ran another couple of feet of 5-ga wire to a splitter which set that down to two 8-ga wires. I ran one of those to the cab of the truck, through another splitter, where I installed a switch, then ran a wire to the lights themselves. I used 14-ga wire to run to the actual lights. After doing that, I grounded them all properly, and they worked great.
My only issue was at idle, the lights could pull the engine down some because they pulled so much juice.
Since you're using a roll bar, they can probably ground through the bar itself. I'd imagine all you'd have to do is run a wire to the switch in the cab, then a 12V wire to the battery itself, making sure to use a fuse in between, and you'd be good.
Hope it helps.



