I need a vacuum hose diagram for a 1990 dodge pickup

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.

SOURCE: diagram of vacuum lines

I think this is what you are looking for.

Mike Butler

• 6674 Answers
• Posted on May 03, 2009

SOURCE: 86 dodge d-100 pickup wiring

Hope this helps.

SOURCE: need a wiring diagram for both these pickup(not audio)

what part of wiring diagram ? and i might be able to email it to ya

SOURCE: where do the vacuum hoses go from the control 1999 Dodge Pickup

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.