The OP's dealer sure wants to make a buck!
Boring stuff for veteran posters here but may be useful to some of the newer crowd:
My tractor had factory lights on the front of the cab, and nothing on the rear. Posters here revealed that the tractor had the rear wiring from the factory (hidden under taped-up wiring to the amber "lollipop" flashers). There's a connector behind a blank in the headliner for the rear work light switch. Switch just plugs in to the connector.
I replaced the two factory work lights on the front and added a couple on the back as well as a couple in the grille guard - all with Maxxima MWL 42's. Then to get some good side lighting I added a cube on each side tucked into the loader frame tube.
The 2,100 lumen Maxxima lights each draw 2.4A which is slightly less than the 35W factory (filament) lamps.
Here's more of the story:
Past Problems: * ROPS mounted work lights attracted bugs in warm weather and probably because I wear glasses, provided glare year-round. This was true with halogens and LED's. * LED's mounted on the ROPS and cab roof made it difficult to see where the cut / uncut grass met. I'm guessing it has...
www.orangetractortalks.com