I just finished replacing the driver's side mirror glass. Not the mirror arm, just the glass. This is the second time I have had to do this in three years (darn golfers) and the OEM vendor, Ramco Engineering, has great customer service and easy to install replacement glass with very good instruction sheets.
Both my 2005 Admiral and my 2007 Diplomat took the exact same part numbers, so I suspect that most Monaco products have the same mirror.
The top (heated) mirror was $28 and the bottom was $27.50. Fedex two day shipping was $52. For $107, I am back in business.
Contact: Amy Dean
Ramco Egineering, Inc.