SB,
Once you have the cluster pulled out of the dash you'll see how easy it is. Depending on the type of sockets you have, it is a matter of pushing in and turning or simply turning the socket. Replacing the sockets in the cluster is the reverse. The bulbs attach to the socket, simple push in type bulbs. I believe FastLane has the proper 12v3w Osram bulbs for $.50 each, should take about $6 to $7 worth of bulbs to rejuvenate the instrument lighting. Makes a world of difference. Before replacing mine, I could barely see the speedo and fuel gauge, the water temp, oil pressure and odometer were unreadable plus the clock was awfully dim.
Now my dash looks like Las Vegas at night

!
__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.