Pioneer AVIC-D1 Manuel D'installation page 26

Installation
When installing the antenna outside the vehicle (on the body)
Put the GPS antenna in a position as level as possible, such as on the roof or trunk lid. (The
GPS antenna is fastened with a magnet.)
GPS antenna
When routing the lead in from inside the trunk
Clamps
Use clamps to secure the
lead where necessary inside
the vehicle.
Rubber packing
25
When routing the lead in from the top of the
door
Make a U-shaped loop in the lead
on the outside to prevent rainwater
from flowing along the lead into the
interior of the vehicle.
Clamps
Use clamps to secure
the lead where
necessary inside the
vehicle.
Waterproof pad
Make sure the waterproof pad
contacts the top of the rubber
packing.
Make a U-shaped loop in the
lead outside the rubber
packing to prevent rainwater
from flowing along the lead
into the interior of the vehicle.