My new steering wheel came in today, woot! Had it custom made, perforated leather on the sides, smooth leather on the top and bottom. The rim is much thicker and it has a flat bottom, which I really like as I have more knee room and the narrow, delicate rim of the original wheel was too small for my hands. Time to install it!
First, unhook the battery with a 10mm wrench and let the car sit for 15 minutes to allow the charge to dissipate.
Now locate the two T27 bolts that hold the airbag into place. They're really buried in there, make sure you have your torx bit totally seated before you start cranking on them. These bolts are captive, they won't fall out. When they're totally out of the airbag, the airbag will easily pop off.
Using a small flathead screwdriver, pop off the yellow harness connector from the airbag and place the airbag someplace safe, with it pointing up.
Now you have to remove the two spade connectors from the steering wheel surround.
Now use a 24mm and remove the nut holding the steering wheel in place. This is really easy with an electric impact. Make sure the wheel is pointing 100% straight. Put the nut back on loosely and now pull on the steering wheel to pop it loose. With the nut on you keep from punching yourself in the face if the wheel pops off suddenly. Remove the wheel and put the new one on, feeding the airbag harness through the hole on the right hand side.
Put the washer and retaining nut back on and torque to 35 ft lbs. Hook up the two spade connectors and now plug the yellow connector into the airbag, it'll snap into place.
Now tighten the T27 torx in, snug is fine, torque spec is 7 ft lbs. These are kind of a PITA to get started, just be patient.
Enjoy your new steering wheel!