Alpine CDE-172BT Owner's Manual page 40

To prevent external noise from entering
the audio system.
• Locate the unit and route the leads at least
10 cm away from the car harness.
• Keep the battery power leads as far away
from other leads as possible.
• Connect the ground lead securely to a bare
metal spot (remove any paint, dirt or grease
if necessary) of the car chassis.
• If you add an optional noise suppressor,
connect it as far away from the unit as
possible. Your Alpine dealer carries various
noise suppressors, contact them for further
information.
• Your Alpine dealer knows best about noise
prevention measures so consult your dealer
for further information.
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