To remove

Fig 1: Removing Wing Liner And Mud Flap

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Raise the car and remove the left front wheel.
Remove the left front mudflap.
Loosen 2 nuts and a rivet that hold the rear edge of the wing liner.
Remove the 2 nuts that hold the siren.

Fig 2: Removing Electrical Connector And Siren
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Disconnect the electrical connector and remove the siren.