llknowlesll,
I just added two new lights to the back of my ROPS on my JD. I wired them directly into the extra work light harness already available under the seat. There are tons of ideas out here on how to do this. A search will provide you many solutions. I attached mine on swivel type brackets so I could face them forward as well as rearward because on my particular tractor the loader really blocks the fender mounted headlights. I'll try and remember to take a picture later and put it in.