Brian, thanks for your answer. Yes, the Air Bag is different from the ABS/EBCM and I will look at the connections at the seat and in the dash. I have some great sons who have put in all the stereo, radar and other "stuff" over the years and now something has failed. The Ford dealer couldn't find the problem and finally decided to blame it on the EBCM/ABS. I think they just took a guess, but this is behaving like an electrical short or intermittent connection. Today I drove around the block with no issues at all, then, it happened. I went to turn the lights on and the engine sputtered and tried to die.
Tomorrow we will disconnect the last "add-ins", including the alarm system, and see where we end up. Any further directions would be appreciated. I just figured it is best to get back to basics and see what happens.
All the best,