As a first guess, I'd say that the windings on the compressor clutch magnet might be shorted (at least partially). You could get the pulley/clutch assembly off a salvage yard car and try it.
Parts out in the moving/vibrating/oil-covered/dirty end of things experience failures. Clutch coils, wires and connectors to the same, etc. Look over that stuff carefully, from the clutch on back (through pressure switch, etc.) Or it could be the horn, or anything else sharing the fuse. The trick is to diagnose what blows it. -- Jim _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com