I noticed this question was posted in 2005, but did not see any answers. Please help.
I have a 1978 300 CD. The defroster is the only thing that works on the climate control panel. I'm not sure what to do, we replaced the climate control switch assembly and still have just defrost. We don't really have history on this car, was purchased at an auction. Live in Texas and really need AC. Thanks for any help you can give.
Jenkins