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Installing the Stereo Using the Mounting Kit

  1. If necessary, remove the existing stereo from the dashboard, and clean the surface of any existing gaskets or marine sealant.
  2. Place the included template over the opening and observe the location of the Apollo™ RA770 or RA800 stereo mounting holes in relation to the existing opening on the dashboard.
  3. Select an option:

    • If the existing opening allows clearance for the stereo mounting holes, remove the template and proceed to step 7.

    • If the existing opening does not allow clearance for the stereo mounting holes, proceed to the next step.

  4. Using the template as a guide, remove material from the dashboard around the screw locations Callout number 1 with a rotary cutting tool, utility knife, or a file.
    NOTICE

    Make sure you remove only enough material to allow the screws clearance, because there is not significant space between the screws and the edge of the stereo. Removing excess dashboard material may be visible after installation, and could allow for unwanted water ingress.


    template diagram with callout
  5. Place the stereo in the opening to test the screw clearance.

    When you can look through all four mounting holes on the stereo and not see any dashboard material, you have prepared the dashboard correctly.

  6. If necessary, use a file to refine the shape or size of the screw clearance area.
  7. Select an option:

    • If you are installing the stereo in a dry location, place the mounting gasket Callout number 2 (included in the stereo box) on the back of the stereo.

    • If you are installing the stereo in a location that is exposed to water, apply silicone-based marine sealant on the mounting surface around the cutout.

      NOTICE

      Do not install the mounting gasket if you applied sealant to the mounting surface. Using sealant and the mounting gasket may reduce water resistance.


    exploded view with callouts
  8. Follow the installation instructions included with the stereo to make the necessary wiring connections through the dashboard.
  9. Secure the stereo to the included mounting plates Callout number 3 behind the dashboard using the screws included in the kit Callout number 4.

    You must use the screws provided in the kit instead of the screws provided with the stereo. The screws included in the kit are designed for use with the mounting plates.

  10. If you are replacing a previous stereo, fill the screw holes from the previous stereo installation Callout number 5 with marine sealant.
    NOTICE

    Failure to completely fill the previous screw holes with marine sealant may allow for water ingress behind the dashboard.

  11. Snap the screw covers Callout number 6 into place on the sides of the stereo.
    NOTE: If you are replacing a previous stereo, you must use the included screw covers when installing the stereo using this kit. The screw covers included with the stereo are smaller, and do not visually cover the screw holes from the previous stereo installation.
GUID-472DC040-C893-48CE-A373-71AF8A5E6B10 v3
June 2025
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