If, by chance, it's still under warrenty, let it be the dealers problem.
Sounds like the power wire inside the disconnect motor is shorted to the motor housing. It could either be worn insulation or a water/mud/salt combo inside the motor housing. It could also be the harness rubbed against the housing and is shorted externally. If it were me, I would check the electrical connectors first to verify it if possible. My guess is that it's internal.
If you're brave, remove the rivets that hold on the connector to the housing and check the internal wiring. I think you have a good chance of saving it at this point. If you can fix it, you'll have to find a way to fasten the connector plate back on the motor housing and seal it up.
Another alternative is let it go until it's possible eventual failure.
You have to weigh the potential repair bill against your skills to determine whether to tear into it or not.
08 4 Door Rubicon
Member of Two Trackers 4wd Club
Great Lakes Four Wheel Drive Association
United Four Wheel Drive Associations