Are there any existing openings in the ROPS near the top? I didn't see any, and I couldn't feel any. I would prefer not to drill the tubing, but I'm not dead set against it.Easiest way is to create your own switch bank on the ROPS and just run a power and ground up thru the rops.
I can understand why JD's lawyers wouldn't want to compromise their OPS.The John Deere way is to put the wires in convoluted tubing and use zip ties to hold to OPS.
I was planning to use some black 16 ga "lamp cord" to each light, bringing the ground back to a central termination point. That would be six total 16 ga wires to route between the three lights and two switches, which would get pretty fugly if it wasn't well secured and partially hidden.I used black electrical cord which doesn't look as bad as plain wire and it also adds an extra layer of protection.
That probably is the best way to go. If I provide enough capacity, I can tap that circuit for an audio system, too.The RSX roll bar is much easier to run wires thru cause the tubes are open on both ends of the roll bar.
On the 825i's the front is where it's bolted down, so your only option is run wires to the back...that's why i recommended making a switch bank for all the lights and just run a power and ground up the tube.