Yeah, working around air bags suck and yes, if you have to get back behind the bag, you do have to disconnect for at least 5 minutes or disconnect both battery terminals and then touch together the red and black battery cable ends and discharge it immediately. You can get those out without all that also, I have on 2 occasions taken the button sets out without disconnecting anything. The ones in there now I had replaced because they were nicer looking then the previous pair. But because I swapped out the original sport column with my new Limited column, I honestly don't remember if they lit up. You are correct about taking them apart as I still have the other set and will do that to see if there are any bulbs, Why I didn't think of that before posting I'll never know. Thank you
Robert