Airbag Light On after Seat Replacement

[iaincamp]

Hi. My Airbag Light on the dash is on, there's nothing resting on the passenger seat. Everything was fine before I removed and replaced my passenger seat, today, to install a BK fire extinguisher mount. (First track day of the CT season, tomorrow, yay!) The wiring harness went back together easily, didn't get trapped beneath the seat adjustment rails, and allows the motor to adjust the seat-back. I did NOT disconnect the battery during the process. Any brilliant suggestions? Thanks in advance.