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INSTALLATION INSTRUCTIONS
About the Installation
The installation of the OHM102/OHM153 overhead monitor system requires experience in both
mechanical and electrical procedures. If you do not posses the necessary experience or tools to
attempt this installation, contact a local Clarion dealer for assistance. Improper installation can
result in damage to the monitor and/or the vehicle.
This manual provides basic installation tips and techniques to aid in the installation of the
OHM102/OHM153 overhead monitor systems. The installation instructions are not vehicle
specific, it’s a guideline on how to perform the installation.
Prior to Beginning Installation
. • Verify that all of the functions of the vehicle work properly (i.e.: power windows, power
door locks, air conditioning, Dome-lights, etc.)
. • Verify the monitor will not interfere with the operation of the sunroof, if applicable.
. • Test the location of the overhead monitor system to ensure it will not interfere with the
safe operation of the vehicle.
. • Determine the location of the AV source(s).
Installation Procedure
1. Identify the polarity of the dome light circuit and set the switch on the bottom of the overhead
monitor housing. The switch allows you to switch between a positive or negative Dome-Light
input signal.
2. Test the overhead monitor system on the ceiling of the vehicle, verifying it’s not going to
interfere with the safe operation of the vehicle.
3. Once the mounting location of the overhead monitor system has been determined, carefully
mark the location with masking tape.