Update: finally got a local small shop to hook it up to a scanner and get a code last week. Unbelievable. Infiniti dealer versus hole in the wall shop: hole in the wall shop wins. They pulled the code leading to the airbag control module. Not sure why it’s faulty, but I just ordered a new used one (considering it’s $700+ new). Hope it works. Dealer would have charged a whopping $159-179 (seems to vary by city) just for that. However, they might of been able to turn it off again, unfortunately this shop wasn't able to.
As for the turn signal, I also went ahead and ordered a new used one that’ll include the complete clockspring and combination assembly TOGETHER with both arms attached, hopefully avoiding any errors in disassembly by anyone else. Kind of annoying ordering such pointless parts that I’ve never needed to replace in my 97 Maxima, but I am OCD about basic routine parts not working. Not to mention the steering wheel/turn signal has been making clicking noises while turning, and when this first started…and it wasn’t long before the airbag light came back on.