I replaced climate control unit and the ac started working again. I replaced the mono valve as well because one of the seals was torn. I went a full day with ac! BUT, now the fuse has blown for the hvac/horn, etc. The circuit is only drawing a couple of amps right now, it must spike at some point. Will have to spend some more time on it.

__________________
1985 300D 296,000 miles - Project "Rusty" 1/4 mile in 19.9 sec @ 71mph. It's almost rust free and water proof!

2006 Dodge/Cummins 6-Speed - 670HP 1159ft/lbs