Caution
4SD
1. Fold the rear seat back.
2. Remove the rear side seats.
3. Remove the rear package trim.
4. Remove the bolts.

5. Remove the rear seat belt.
6. Install in the reverse order of removal.
5HB
Note
Front seat belt removal/installation
Rear center seat belt removal/installationMazda 6 Service Manual: Registering Your Vehicle in A Foreign Country (Except United States and Canada)
Registering your vehicle in a foreign country may be problematic depending on
whether it meets the specific emission and safety standards of the country in which
the vehicle will be driven. Consequently, your vehicle may require modifications
at personal expense in order to meet the regulation ...
Mazda 6 Service Manual: Front door speaker removal/installation
1. Disconnect the negative battery cable.
2. Remove the front door trim.
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
Front Door Speaker Installation Note
Attach the speaker with the wiring harness placed in the groove of the door
unit panel.
...