Just a wee bit of advice if it helps, when wiring up a winch it is highly recomended to add an isolator on the live side to the contactor / solenoid pack (puit it on the side of the battery box and it can be operated from the drivers seat, means the winch can be isolated on not triggered accidentally) and also use the same size of wire for the earth and run that from the winch back to the battery as well.
Winches use lots
of power (current) and benefit from unjointed lengths of good quality flexable wire depending on the draw of the motor.
I would also recomend running control wires back to the cab so you can operate the winch from the drivers seat without having to worry about wander leads getting in the way. Small wireless remotes are also easily available and work well too
Hope this helps & good luck