And here is what the Miata/Protégé Steering wheel looks like before modification:

I did not snap any pictures of mine, but here is the picture of what the holes should look like after the drilling from the silver bullet write up:
7. Place the new wheel straight on the shaft. Push on firmly and put the large nut back on and tighten it down making sure it goes back.
8. Now comes the fun part. Connecting all the wires. On the airbag, there should be 2 wires. You can connect these 2 wires to the 2 airbag wires in the car in any order… it does not matter. I will caution you to be careful with this portion, you never know when something might malfunction. If you have both sides of the connector from your new airbag, I would suggest using it. You can solder the connector onto where the old airbag harness use to be. Otherwise, you will either need to solder the wires with the airbag hanging nearby or use some type of electrical connectors to crimp the wires. Make sure you put some type of insulator around the exposed wires.
9. You will also need to connect the horn wire in the car to the wire to the red wire pictured. Note, on this wheel the cruise control and horn are located on the same harness. If your new wheel does not have cruise, this won’t be an issue. Cut the wire from the harness and connect it the same way you connected the airbag wires.
10. Cruise Control(if you have it… and if you want to keep it): I purchased the protégé wheel with cruise control in the hopes that it might operate the same way as the FD’s system. No such luck. The protégé has 3 wires and the FD has 2. I have been told to wire up the FD cruise control wires to the protege cruise control box: white/blk wire goes to the blue wire, red wire goes to black wire. I have no clue what the main switch is for but the wire wire contols it. You can also fabricate your own bracket. Here is a picture from the silver bullet website. He used resin to fabricate his bracket.
11. Replace the bolts on the back of the wheel to secure the airbag.
12. Reconnect battery.