Power Acoustik PTID-8940NRBT Gen 2 Owner's Manual page 14

Installation Method 2:
1 Tighten the bolt onto the rear
panel of the unit.
3 Place the unit into the dashboard;
make the bolt bar across back strap;
and then fix the bolt by the Nut M5.
5 Install the trim bezel onto the unit.
2 Tighten the back strap onto your
car inside the dashboard.
4 Screw the unit on the car on the
two sides with M5×5 SCREWS.
6 Sketch map when installation finished.
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