Hey Donald, welcome aboard. Can you give some specifics? What tractor (I assume you are talking about a tractor) are you talking about? Guys here are great, but we need some context. Thanks!
Donald,
I installed the rear work lights on my cabbed B3030. You have to remove the headliner in order to access the wiring harness. It's already there; taped to the ceiling. The Kubota kit for the work lights comes with the switch and hardware to mount the lights to your amber light brackets. If you do the work, I would advise you to buy a few extra retention buttons. You remove the buttons on the headliner by pressing on the center with the head of a finish nail. Attached are a few pics from my job. I show the headliner removed--which you pass out the rear window. And the rear lights and the retension pin.
Good luck.