HELP A/C heater switch

I bought some 5-button climate switches for $25 new from Paddock in the 90's for my 69 Dart. The $48 ebay price is a deal today. I had to use one to replace the rare 4-button one in my 65 Newport, figuring out how to re-wire and plumb it. Do like me and install a 30 A relay on the "blower high" setting, otherwise the high current will eventually melt your new pneumo climate switch plus blower switch.