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Old 03-09-2009, 08:53 PM
yellit yellit is offline
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Join Date: May 2004
Location: Flowood Mississippi
Posts: 438
AC Clutch circuit

Most of the pressure switches...(high and low) are just normally closed when pressures are correct....
I believe the compressor clutch winding is grounded at one end and operates when B+ gets to it through the several stage switch/relay/pressure switch leg....

Just wire that switch in series to the compressor clutch in series with the other switch...single wire passing through both switches.....

I am converting my 1978 300D servo style to full manual also...a little at a time....
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1978 Yellow 300D (The Mustard Toad)
1980 Blue 240D (The Iron Toad)
1989 Grey Mitsu.4WD Mighty Max Pickup (Needs a Diesel transplant bad)

(Open the pod bay doors HAL)

Last edited by yellit; 03-09-2009 at 08:57 PM. Reason: more info
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