I gotthe ones that are installed in the light system from camp world when they did my baseplate install. I imagine you could DIY if you wanted. I only paid $30 for the install and I think the lights were around $100? Anyhow real simple would be to just add the mag mount lights and run a siumple cable, but again you will have to run each and every time or just leave in place IF you have a good solid place to mount them. You could also just by some drill into the bumper and run the plug to the rv, just have to hard hookup out of way.
But easiest way is to have whoever is going to do the work to wire in the light kit when they do the brake and basemount or whatever you plan on. Dont forget to have them wire in a CHARGE LINE for the battery also.