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			Park your car for a few ____?
 If it's days, then there is something wrong with your car and/or battery.  My '01 S can be parked for a few weeks and will still start.
 
 I haven't seen a switch that would only disconnect certain items.  Plus, I don't think you would want to have the engine relearn it's curves every few days.
 
 If you have an outlet nearby, you could look into buying a battery maintainer.  Porsche has one.  I am using a CTEK 3300.
 
 -james
 
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 '01 Boxster S, 51k miles
 '05 Mazda 6 Grand Touring Wagon
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