Per the installation instructions for the Superwinch LT2000 ATV Winch, part # 1120210, the red wire from the handlebar switch is to be connected to the wire on the ignition switch that only shows current when the ignition is in the on position. You can use a circuit tester like part # PTW2993 to be able to identify the correct wire.
Then route the 2 long Black and Red wires from the solenoid to the motor. Next, route the shorter Black wire to the battery, and route the shorter Red wire... view full answer...