Need a diagram of the heater controls on the.

ANONYMOUS

MEMBER
1988 CHRYSLER FIFTH AVENUE
148,000 MILES

Need a diagram of the heater controls on the firewall and its function with temp control.I have put a new switch and vacuum tubes also a new water valve in the hot water line but still control the temp. The ac seems to work but only in the max position. Can you help me with this? Thanks ted Vincent.

1 Reply

CARADIODOC

MECHANIC
33,871 POSTS

You'll find multiple diagrams in the manufacturer's service manual. The hoses are molded into a plastic connector at the switch end and they are color-coded to show where each one goes on the other ends. There are different versions with different car models and options.

If you can't find a dozen service manuals on eBay you can also go to one of the pick-your-own-parts salvage yards and find a similar car to look at. Do a search for "Pull-A-Part" and see if there's a yard near you.