I know this has been discussed before, but here it is again for your viewing pleasure.
My mother ordered a red and black leather steering wheel from the friendly folks at Source One. Then being the good son that I am...I spent some time last week installing it for her.
First thing I did was disconnect the neg cable...(just for safety sake
Step two was to remove the airbag by inserting a small screwdriver into the small holes located on either side of the back of the steering wheel assembly. This allows the ability to "push" a spring loaded wire that holds the air bag in place.
Step 3 was to remove the lock nut (13/16"). I then just gave the wheel a couple jerking pulls to disengage the steering wheel from the splines. I left the nut on a few threads to avoid the steering wheel and the laws of physics from allowing the steering wheel to hit me in the face.
Step 4 was to remove the wire connector (blue colored retaining tab).
Step 5 was to disconnect the airbag wires.
Step 6 with the wires disconnected you can now remove the steering wheel.
Step 7-Reverse process and put it all back together. It took my about 30 minutes, most of the time was spent messing with the retaining tabs on the wire connectors.
I tried to post this putting photos in line with the steps, but I kept getting a loading error. Photos to follow.