Front Buckle Removal/Installation

Disconnect the negative battery cable.
Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION [EXCEPT L3 WITH TC] ).
Disconnect the buckle switch connector.

Fig 1: Disconnecting Buckle Switch Connector
Courtesy of MAZDA MOTORS CORP.
Remove bolt.
Install in the reverse order of removal.

Fig 2: Front Buckle & Torque Specification
Courtesy of MAZDA MOTORS CORP.