ac and heat at the same time

csx452 said
It's a 72 Swinger and I don't have a FSM. .

You most certainly do, LOL

Download this, fer free, then thanks to AbodyJoe

[ame]http://www.abodyjoe.com/pictures/Misc.%20car%20info/1972%20Plymouth%20Chassis%20Serv%20Man.pdf[/ame]