Hello, and welcome to JA!! the air bag light will go out when everthing is ok and the key is on. in other words, doesnt require a reset. you might want to double check all your connections. the air bad connectors are yellow in color and are very sensitive to bad connections. also on the passenger seat is a module mounted the the bottom on the seat frame. make sure it is plugged in correctly.
let me know what you find. if everythin checks ok, please let me know.
Due to the passenger presence system in the passenger seat, there is not much you can do to get the light out without having the seat in. The passenger presence system has a sensor that hooks to a silicon gel filled bag in the seat. When you sit in the seat it puts pressure on the bag that the sensor detects and tell the SIR that someone is sitting in the passenger seat. I guess what I am trying to say is that this is not something that you could remove from the seat and plug back in to get the light out. I hope this answers your question. If you need any more info, please ask.