I believe all MB have 2 horns and those are what you see listed at Fastlane. Are you saying that when you hit the horn, a fuse blows?
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section