Doh! Mental error on my part, for some reason while I've used the FAQ in the past, I didn't think to look at it this time, I did a search of past posts. Thought it was a unique problem though now that the FAQ explains that defrost is the default setting it all makes sense.
Thanks and lesson ....(consulting FAQ first).....relearned?
I did check the tubes on that thing in the picture, so its not that. Perhaps the tube got cut or split when I was fishing around the back of the radio, or perhaps it came off the back of the switch. I was trying to "feel" around back there suspecting that, so I may have to remove that part of the dash.
