My trailer didn't come with the controller/remote for the winch. Replacement options were around $70 for 6' and $40 for extensions. Looking inside where the winch controller receptacle is 3 male prongs. So this should work for any "3 wire" winch.
I used a 14ga, 50' extension cord, my trailer is 20' long, so this is more than enough. The wiring is basically 1 hot, then a wire for forward and another reverse. I used a momentary 3-way switch, a "grip", and some flat bar aluminum scrap.
Other winch tips:
You can easily wire in a "wireless remote" at the same time. These can be found on Amazon for under $20.
Solenoids sticking? Stop beating them, scrap em' and go solid state. "500a winch solenoid relay contactor" can be found for under $40.
