So Hoosier, I take it from your video ..... if my occupied passenger seat light does NOT illuminate, then the light sensor may be faulty or the air bag has a problem? Correct?
The mechanic shop, with test gear to test the air bag, informs me there is nothing wrong with the air bag's functionality. They quoted a repair cost of the status light, but thus far I have just trusted their word that the air bag will function. A light going on and off seems less than significant.
Your video does tell me what is actually supposed to be happening on the dash. Thanks for your effort.