The above answers sound great.
I'd add that you should unclamp it from the dash, and unplug the horn wire and remove the turn signal switch if you have one.

I'm guessing you thought it would be easier though.. it's not.
Well not all that hard, just not as easy as you would hope.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-