Test the motor...??
Has it completely stopped working? If so…disconnect the two wires on the winch itself. You want to test the winch by bypassing the relay, switches and wiring….put the winch in “free Spool”. Pull out a foot or so of the wire rope to be sure it is disengaged.
With a small set of booster cables attach one clamp from a battery to one post on the winch. …attach the second booster cable clamp to the battery….carefully touch that last clamp on the second winch post…the winch motor should spin….reverse the connections to spin the other direction….If the motor is ok…..pull out a bit more wire rope and engage the winch to pull the cable…test the same way….watch your hands….might be better to have a helper to do this with you…Also warn will have the schamtics for that winch on their web site....it will help you to determine where the main ground is connected....I'm pretty sure its off the main relay to frame...