Pioneer AVIC N2 - Navigation System With DVD player Installation Manual page 24

Installation
When the Hide-away unit is installed under the passenger seat, etc., use the installation
board.
2. Decide on the installation position, and drill the holes.
3. Secure it firmly using the self-tapping screws.
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Installation board
Drill holes of between 4
and 4.5 mm in diameter.
Self-tapping screw
(6 × 16 mm)
Mark up the positions
for drilling the holes.