Thanks whunter, I have to replace mine and was wondering if I could without draining the whole system.

The in-line fuse sounds like a good idea. When I purchased my SDL both the Aux. Water Pump and A/C Compressor Clutch were unserviceable. Both are protected by the same fuse (#5). I'm not sure if their failure was coincidental or one took out the other. The A/C Clutch was shorted out and the Aux Pump appears to be seized. The fuse blew until the Clutch was replaced and the pump disconnected (present state).

I see many posts regarding the possible failure of the Climate Control if the Aux. Pump fails. What causes this and what are the likely symptoms?
My ACC works OK although it doesn't seem to regulate very well.