what is needed

Base plate for toad
Tow bar; do you prefer for it to be on front of car or on back of motorhome?

Supplemental braking system..personal choice, but I will not go without it. First-safety, 2nd- state rules, 3rd-owners Manual for motor home rules.
Wiring for toad;
Locks, keyed alike is good
Safety cables
Electrical cord from motor home plug to car plug
Need technical answers: does key need to be in ignition? Turned to accessory to unlock steering wheel? Fuses to pull, if any? Max speed you can tow..one of mine said 65 m.p.h.
Depending on your vehicle, transmission disconnect..think that is what it is called. I always bought towable vehicles.

First 2 cars, I set up with all new stuff, last car, new based plate and used Blue Ox and used Brake Buddy. Saved about 1, 800.00.

Need some kind of lighting on the toad.
I have been using a Roadmaster Stowmaster set up for years on several different toads.
I use diode setup for the lighting installed in the rear tail lights with wiring ran under the toad.

After you figure out what you need, start watching Craigs List and eBay. I've both bought and sold towing equipment. If you are afraid of those two options, don't forget Amazon.

Blue Ox is a good one. Call them and they can fix you up and explain everything.