Airbag Fail after window regulator replacement?

[JonR42]

I followed the Tech guide article re: window regulator replacement for my 996. Buttoned it all back together but the Airbag Failure red light is now on? I'm sure I reconnected it all correctly.
How can I reset this failure code?

[Lost Canyon]

The battery needs to be disconnected for 20 minutes before disconnecting an air bag or it will set off the light.
A Durametric cable can reset or a $100 trip to the dealer.
I had the same problem with a steering wheel removal.