If your dash assembly is like my 450 slc then the replacement proceedure is dead easy. My steering wheel has a plastic emblem in the center. It pops out with the aid of a small screwdriver. Under it is a 17 mm nut. Remove the nut and the wheel comes off. Be sure that the wheel is in a level position so it goes back correctly. With the wheel off the instrument cluster will slide out. Make two coat hanger wire hooks and you can winkle the cluster out. The bulbs just pop out of the back of the cluster. I have to remove the spedo cable and the oil pressure tupe in order to remove the cluster but I think that all your instruments are electronic and won't require the removal of anything in order to get the cluster out far enough to change the bulbs. At lest that is my story and I'm sticking to it.