Howdy Bruce,
Our old tow was a 2005 Jeep Wrangler Unlimited. Kind of a stretched two door. The 4 door is a giant improvement!! Much more room, better ride, etc. The Ruby comes ready for off-roading right from the factory..Lockers, skid plates, rock rails, sway bar disconnect, etc.
We opted for the GPS display, and we love that feature..Since we full time, its easy to find Post Office, Walmarts, etc, plus find your way home!!!
Can't help with the wiring for the tow lighting..I bought a new 10,000lb Blue Ox for the, then new Jeep, and had the tow and lighting installed at a RV shop (MidAmerica in Carthage, MO was a Foretravel dealer for a short time) that I trusted.
One thing, our owners manual, indicated that the ground (neg) had to be disconnected before towing. I used a readily available battery disconnect from WalMart. I got on a couple of Jeep formns and they all recommended. Its quick and easy to use..Also, can act as a theft deterrent. here's a couple of links: Battery Disconnect Switch
Amazon.com: Battery-Disconnect Switch - Will Fit Both Side Post and Top Post:
A google search for battery disconnect will return lots of options.
We use a Brake Buddy for auxillary braking, so I just ran a separate, fused, wire and power outlet plug from the battery for the Brake Buddy. No problems running the battery down (over 18 months of towing).
Good Luck, Dave Abel
As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.