The hardest part about pulling the instument cluster is disconnecting the speedo cable at the tranny. This gives you enough slack to get it out far enough to undo the speedo connection . There is also a ground behind the cluster that you should check and clean while you're at it.
1985 380SE- 160,000km 'Blistu' - Sold
1988 300CE- Eva,my garage mistress
2007 R350 4matic- The Black Pearl
2011 Ford Ranger-Work truck
1974 25' Trojan Sea Raider- 'Grannyknot'
2002 215 cm Atomic DH skis- Canadian SDH record holder, 175.5km/h- Vars 2010