SoundMax SM-CMD2023 - Manual (Page 5)

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3. Insert trim plate.
When you prepare to insert trim plate, please check it’s direction. Once it was up side down, it cannot be fixed.
NOTE: Outer trim frame, hook, and mounting sleeve are not used for this installation.
This is only intended as a general guide; contact the vehicle's manufacturer for specific instructions.
This method of installation uses the screw holes at the sides of the unit and the holes of the existing vehicle
mounting bracket.
1. Remove the hooks on both sides.
2. Align the screw holes of the mounting bracket supplied with the car and the screw holes of the main unit. Tighten
the 2 screws on each side of the unit. Then fasten the brackets to the car.
3. Attach wires of the unit to existing speaker wires. See wiring diagram.
Electrical connections
Speaker Wiring Notes
Follow the above wiring diagram to install the head unit with new or existing speakers.
• This unit is designed for use with four (4) speakers with an impedance 4 Ohms.
• An impedance load of less than 4 Ohms could damage the unit.
• Never bridge or combine the speaker wire outputs. When not using four speakers, use electrical tape to tape the
ends of the unused speaker outputs to prevent a short circuit.
• Never ground the negative speaker terminals to chassis ground.