I can drive a manual but prefer the auto, mostly because I like to drink coffee while rolling through traffic on the way to work. Its fun to row the gears but in the end, auto for me is more practical.
I have read on here about a trailer wiring harness. But was due to backfeed when the trailer was hooked up to the truck and also plugged in to power at same time. Not sure about anything under the hood.
Most of us on here are biased to the Gladiator but many tend to add lift kits and bigger wheels/tires aftermarket. I bought the Glady just because of the truck bed and more towing capacity - 6,000 lbs. If all you want the JL for is the Recon package, buy the Gladiator and build your own.