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Old 02-27-2009, 01:54 AM
cdplayer's Avatar
Just my Jeep and my S500
 
Join Date: Aug 2006
Location: Sacramento, Calif.
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Vacuum source??

Where does the vacuum switchover block get it's vacuum supply? The vacuum pump under the rear passenger seat? Or someplace on the engine?

Quote:
Originally Posted by M.B.DOC View Post
The a/c controller (pushbutton) sends ground signals to a vacuum switch-over block that sends vacuum to each of the vacuum elements that open the door in the case.

There are 4 vacuum elements & a vacuum controlled heater valve.
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