Bought an LJ that has a warn winch already installed on it. The winch is a little bit idler but still in good condition. When I tested it, it will run out, but not in. The battery must be very weak because it barely spoils out. When I try to spool it in, it just clicks. Is it possible just the weak battery is causing this? Or do I need to start testing solenoids? If so, how do I test the individual solenoids to isolate the one that doesn't work correctly?