I think on the underside of the hitch receiver it should say the tongue weight and what it's rated to tow. I know on my trailer, it's only rated to hold 300lbs. As for wiring for the trailer, maybe some of the electricians on this site can answer that question.
2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan & our Great Pyrenees Layla