Question about 1990 Dodge D150
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Posted on Jan 02, 2017
SOURCE: wiring and vacuum diagrams
wiring diagrams for a lot of vehicles (but not all!)
go to autozone . com
repair info (on the left)
vehicle repair guides (center panel)
put in your vehicle info
select chassis electrical
then wiring diagrams (on the right, bottom of the list)
You might be able to find vacuum diagrams also, but I'm not sure.
Posted on Feb 21, 2009
first ... Make sure that you have vacuum to your control head. This is normally the black vacuum line. The vacuum than goes to the various vacuum motors on the Heater /AC case. These vacuum motors rarely fail. The normal fault is loss of engine vacuum ..cut line or not secure to engine. second.. a fault with the vacuum reserve reseviour. When the engine needs the vacuum this is your vacuum supply.
Posted on Apr 29, 2010
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