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®

MS-RA55 Installation Instructions

Important Safety Information

 WARNING

Failure to follow these warnings and cautions could result in 

personal injury, damage to the vessel, or poor product 

performance.
See the 

Important Safety and Product Information

 guide in the 

product box for product warnings and other important 

information.
This device must be installed according to these instructions.
Disconnect the vessel's power supply before beginning to install 

this product.
Before applying power to this product, make sure it has been 

correctly grounded, following the instructions in the guide.

 CAUTION

Always wear safety goggles, ear protection, and a dust mask 

when drilling, cutting, or sanding.

NOTICE

When drilling or cutting, always check what is on the opposite 

side of the surface.
You must read all installation instructions before beginning the 

installation. If you experience difficulty during the installation, 

contact FUSION Product Support.

What's In the Box

• Mounting gasket
• Four 6-gauge, self-tapping screws
• Power and speaker wiring harness
• Two screw covers

Tools Needed

• Phillips screwdriver
• Electric drill
• Drill bit (size varies based on surface material and screws 

used)

• Rotary cutting tool or jigsaw
• Marine sealant (optional)

Mounting Considerations

• The stereo must be mounted on a flat surface.
• The stereo must be mounted in a location that allows open 

airflow around the rear of the stereo for heat ventilation.

• If you are installing the stereo in a location that may be 

exposed to water, it must be mounted within 45 degrees of 

the horizontal plane.

• If you are installing the stereo in a location that may be 

exposed to water, the cable should have a drip loop to allow 

water to drip down off the cable and avoid damage to the 

stereo.

• If you need to mount the stereo outside a boat, it must be 

mounted in a location far above the waterline, where it is not 

submerged.

• If you need to mount the stereo outside a boat, it should be 

mounted in a location where it cannot be damaged by docks, 

pilings, or other pieces of equipment.

• To avoid interference with a magnetic compass, the stereo 

should be installed at least 15 cm (5.9 in.) away from a 

compass.

Mounting the Stereo

NOTICE

Be careful when cutting the hole to mount the stereo. There is 

only a small amount of clearance between the case and the 

mounting holes, and cutting the hole too large could 

compromise the stability of the stereo after it is mounted.
Be careful when installing the stereo in an aluminum boat or a 

boat with a conductive hull, if you require the electrical system to 

be isolated from the boat hull.
Before you can mount the stereo in a new location on the 

mounting surface, you must select a location in accordance with 

the mounting considerations.

1

Trim the template and make sure it fits at the mounting 

location.

2

Adhere the template to the mounting surface.

3

Using a drill bit appropriate for the mounting surface, drill a 

hole inside the corner of the dashed line on the template to 

prepare the mounting surface for cutting.

4

Using a rotary-cutting tool, cut the mounting surface along 

the inside of the dashed line on the template.

5

Place the stereo in the cutout to test the fit.

6

If necessary, use a file and sandpaper to refine the size of 

the cutout.

7

After the stereo fits correctly in the cutout, ensure the 

mounting holes on the stereo line up with the pilot holes on 

the template.

8

If the mounting holes on the stereo do not line up, mark the 

new pilot-hole locations.

9

Using an appropriately sized drill bit for the mounting surface 

and screw type, drill the pilot holes.

10

Remove the template from the mounting surface.

11

Make the necessary wiring connections (

Connections

page 2

).

12

Place the mounting gasket on the back of the stereo 

À

.

13

Place the stereo in the cutout.

14

Secure the stereo to the mounting surface using the included 

screws 

Á

.

15

Snap the screw covers in place 

Â

.

November 2016

Printed in Thailand

190-01934-02_0A

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