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Old 10-31-2003, 10:16 AM
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blackmercedes blackmercedes is offline
Just a guy
 
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
They are activated by the outside temperature and come on automatically when the temp is about +1C or so and below. I have no idea of how it all is activated, but the ACC unit is not involved.
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1998 C230 "Black Betty" 240K

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