Overview

The Garmin 010-12527-00 is a power and audio module that supplies power and a data link to compatible GXM 53 and GXM 54 receivers and breaks out stereo audio for a marine stereo. It acts as the interface between your boat’s DC system, the Garmin Marine Network, and the stereo input so the receiver can deliver weather and SiriusXM audio into the helm system.

It runs from 9 to 32 VDC and is protected by a 2 A fast-acting mini-blade fuse on the power feed. The audio lead is line-level and is meant to go to a stereo line-in or AUX input, not directly to speakers.

Key features

• Single module that handles power, network data, and audio breakout for GXM 53 and GXM 54 installations
• 9 to 32 VDC input range with a 2 A fast-acting mini-blade fuse on the supply side
• Garmin Marine Network connection for sharing receiver data with compatible Garmin displays on the network
• Line-level stereo audio output intended for a head unit line-in or AUX input
• Audio can be extended using a standard RCA cable when longer runs are needed, with connections kept in a protected area
• Also listed as compatible with the Garmin GC 200 Marine IP Camera

Compatibility and fit

This module is used with Garmin GXM 53 and GXM 54 satellite weather and radio receivers and a compatible Garmin Marine Network device at the helm. Plan on having a free Garmin Marine Network port available, either directly on a display or through a network expansion device, and a stereo that offers a line-in or auxiliary input for the audio feed.

Installation and setup

Mount the module where it stays accessible for service, close to your DC distribution and near the Garmin Marine Network backbone area you are tying into. Keep connectors supported so they are not hanging on the cable, and route all runs away from ignition components, high-current wiring, and other common sources of interference at the helm.

Electrical and system integration

Feed the module from a switched circuit or through an in-line switch so the receiver is not left powered when the boat is unattended. Verify the fuse is present and accessible, and keep all DC connections clean, tight, and above areas that see bilge water or routine washdowns.

Audio integration

Connect the audio lead to the stereo’s line-in or AUX input and confirm the stereo input is configured for that source. If you need to extend the audio run, use a standard RCA extension and make any extension connection in a dry, protected location so it is not exposed to water.

Use cases on board

This module is a good fit for boats that want SiriusXM audio through the cabin or cockpit stereo while also feeding satellite weather to compatible Garmin displays over the Garmin Marine Network. It’s commonly used on coastal cruisers and offshore fishing boats where a clean helm installation and quick access to fused power matter.

Maintenance and care

Periodically inspect the fuse, cable strain relief, and connector seating, especially after trailering, heavy vibration, or seasonal layup. If you see corrosion starting at a connector, address it early by cleaning and protecting the connection and improving drip loops or shielding in that area.