Well, that's one way. I have taken the instrument cluster out of my 67 Belvedere GTX multiple times. I have Never taken the steering column down! Removing the wheel, tho is a really easy way to keep you from going insane when then the housing scratches the column paint. (lay a rag over it and it's NP). First, I DO reach up underneath the dash and unclip the speedo cable. I can usually move the cluster out of the way enough (pull it towards me) to get my hand behind the W Wiper switch and unplug it, as well as the headlight switch. The rest of the wires give me enough room to then take the cluster our far enough to unplug everything attached to it's back. So, when the nexttime to removethe cluster comes again, you won't have to unplug anything to get to lights, and plugs etc. As it turns out, I happen to be in the middle of rewiring my '67 today! I can take any picture (s) you'd like me to and post 'em here. The shop is 38 miles from where I live so you'll have to wait until Tuesday! I also admit that the brackets that hold the harness under the dash, have been loosened, (by bending them open) and I generally don't replace the harness back in them as strictly as they were. This makes for a ton less work the next time you go under there. BTW. I'm 5'10" and weigh 250. I CAN'T fit under the dash, so this way works for me every time!LOL.
Lemmie know what pics you'd like and I'll do my best. 67GeeTeeX