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
Truck: 2020 Chevy Silverado 2500 HD Duramax: Firestone airbags, Curt gooseneck & an Anderson Ultimate 5th. wheel hitch. USMC combat vet & retired LEO. Robert & Anika