You have most of it. Lets start off with the Jeep. You'll need a base plate. Wiring for stop/tail lights. The wiring can be done with magnetic lights, internal wiring using diodes and some companies have a wireless system.
A brake system and there are many on the market ranging from a few hundred dollars to thousands of dollars. Some work off of air pressure from the air brakes on your coach, others have a motor that pushes the brake pedal via wires or wireless etc etc. And possibly a break away system.
On the motor home end, you'll need the tow bar, safety chains or steel cables, a cable running from your 4 or 7 pin plug to the Jeep and if so inclined a barrier to keep rocks from hitting the Jeep. Roadmaster makes a screen that permanently mounts to the tow bar or others make such a shield that mounts to the car.
The next thing depends on your Jeep. Some vehicles require you to disconnect the battery while others only require pulling fuses and the best of the bunch don't require anything. If you have to pull fuses, then rig up a switch system so all you have to do is flip a switch and there are a bunch of aftermarket products to make disconnecting the battery easy. If you have to disconnect the battery read this: https://www.irv2.com/forums/f85/chev...ct-472814.html
If you have to pull fuses, buy an inline fuse holder such as this: https://www.jpcycles.com/product/381...B&gclsrc=aw.ds
Remove the fuse from the original location and then cut the fuse holder wire. Attach a flat spade terminal to one end of the fuse holder and insert it into one of the metal pinchers that holds the fuse in its location.. Attach another wire to the free end of the fuse holder then to one side of an on/off switch. From the free end of the on/off switch, attach a wire that leads back to the original fuse holder, attach a flat spade terminal to that end and plug it into the free pincher original fuse holder. Obviously the original fuse will go into the 'in line' holder. Mount the switch and you're done.