[Beav]

If you can hear the solenoid clicking it's not an alarm, it's the solenoid. Get your warranty starter.

A/C: I'm not sure at this point, but I'll look into the diagrams. You might try posting Chris Debbans to see if he has any insights.

Spinning one wheel on an 'open' differential would require the other to turn backwards if the driveshaft was kept from turning. I'm uncertain how the SVX diff reacts as I believe it is a Ferguson type LSD. Anyway, it's doubtful that the diff would be bad, if it was broken to where it wouldn't transfer power it would be making a heckuva noise. I also suspect that the front wheels alone lock in park and the rears don't due to no hydraulic pressure locking the transfer clutch pack when the car's not running. Best bet is to put the car on a hoist and place it in drive for a moment, you'll easily see if all four wheels are turning.