Welcome to GM Forum! At least you found out about your non-working air bag before getting into an accident.
The air bag light flashes seven times when the key is turned to RUN to indicate that the system'* self-tests passed. Anything else, and you need to get the codes read.
You are correct that disconnecting the yellow connectors will disarm the air bags (about 3-5 minutes afterwards) and reconnecting them will rearm them (immediately). However, I'm willing to bet that you inadvertently damaged part of the driver'* side air bag system during your repair; the air bag warning light was trying to tell you that. It could have been as simple as a pinched wire.
Now, why did they deploy in the first place? That'* the $64,000 question. Can't say I've ever heard of this happening.
Also, I renamed your thread and moved it into the Bonneville section. This should get more people looking at it.
2007 Pontiac G5
1999 Pontiac Grand Prix GT - Stock engine ate transmission.
1997 Pontiac Bonneville SE - Cammed engine ate transmission.
Last edited by SignOfZeta; 05-21-2011 at 12:40 PM.
Reason: Did my moderatorly duties.