Jim, if you can reach the speed nuts on the back of the speedo, you can remove the speedo from the front of the dash, while seated comfortably in the driver's seat. The bulb holders push in to the back of the speedo and into the tach as well. The smaller instruments may just push into the dash. I know I replaced some bulbs in mine and I am almost positive I just grabbed them and pulled them out. The round multi idiot light holder above the steering column just pulls out, if I remember correctly and uses those tiny screw base bulbs that are available at hobby shops for model trains. I believe its the same bulb used in the MGB brake circuit test switch on the left hand side of the dash on US MK II cars, FWIW. If you remove the leather covered under dash cover on the driver's side, I think there's enough room to reach behind the dash and remove the speed nuts on both speedo and tach. John