Hi guys. When move the levers to the right to change the air output, nothing happens on the floor or dash setting. Defrost is ok. If I remember correctly my 1973 El Camino had vacuum lines running to the back of the selector and if one had a leak it would not work on that setting. Does the 1973 F100 have the same thing or is it a different setup? Do I need to remove the whole thing from the panel to inspect it? When I get the AC converted on this thing I will want to be able to use those settings. Thanks for any suggestions.
Donald.
Donald.