ergo350z

I have a 2005 350z, a while back I had a shop install a new sport steering wheel, shortly after the installation the horn would not work and the airbag light was flashing in the dashboard. The tech told me that is was normal, because the new steering wheel does not have an airbag. Now I attempted to change and install the stock steering wheel back on, I noticed there were no cables loose or hanging anywhere. the steering wheel has to female connections one for the horn and the other for the airbag, but I looked all over under the dashboard, I took the plastic covers where the signal and start switch are on and I couldn't find the darn cables. I think that A-hole cut the wires off, so now I'm trying to find a picture or diagram that tell me where the wires are. Can anyone help! Thanks