Has anybody installed the digital conversion system?? I'm having a few problems with the push buttons (have to trick her by turning on the DEF first, then switching to Air), so I will probably get the whole system back in shape. AC was already converted with new comp/drier, etc a couple of years ago. Also, any good sources for reconditioned push buttons?

Thanks!

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TClanton
1980 450SL 90K
1980 300SD 112K