1. Remove the headliner.
2. Remove the nuts.
3. Remove the roof carrier bracket.

4. Install in the reverse order of removal.
Rear spoiler removal/installation
MoldingMazda 6 Service Manual: Driving In Flooded Area
WARNING
Dry off brakes that have become wet by driving slowly, releasing the accelerator
pedal and lightly applying the brakes several times until the brake performance
returns to normal: Driving with wet brakes is dangerous. Increased stopping
distance or the vehicle pulling to one side when ...
Mazda 6 Service Manual: Accessory Sockets
Only use genuine Mazda accessories or the equivalent requiring no greater than
120 W (DC 12 V, 10 A).
Front
The ignition must be switched to ACC or ON.
Center
The accessory sockets can be used regardless of whether the ignition is on or
off.
CAUTION
To prevent accessory socket damag ...