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The best deal on towbars is the RB-9050 ReadyBrute from NSA RV. You can get the towbars separate or combined with the ReadyBrake toad braking system. The towbars are rated at 8000 lbs. I bought the combined package for $864 with free shipping. Don't buy it from NSA, but Google it and shop for the best prices. Here is the link to look it over. RV Tow bars with Integrated ReadyBrake Surge Brake, Standard TowBars - NSA RV Products
I used a Roadmaster 1545-1 base plate because on my toad nothing would show on the front of the car when I wasn't towing.
I used the permanent wiring kit on the toad.
Most motorhomes have an on-board air compressor. If yours does not have one you might take a look at this 12 Volt, 150 PSI High Volume Air Compressor
I recommend the TireTraker system which monitors the air pressure and temperature of the tires. You can replace the sensor batteries yourself with batteries from Wal-Mart. Here is the link. TireTraker TPMS
Hope this helps! Good luck & God bless!