Overview

The Attwood Marine 11478-7 is a 12V drop-in hidden horn with a low-profile face and both black and white covers included. It suits boats that need an audible signal without a raised trumpet on the surface, and it is built around ABYC horn requirements for boats up to 20 meters.

This style works well when you want the horn to sit neatly into a finished panel and keep the look of the helm, console, or dash clean. The two included covers make it easier to match lighter or darker trim without changing the horn itself.

It also makes sense as a retrofit when you are replacing an older flush horn on a 12V system. If your boat runs on 24V, this is not a direct match unless the horn is fed from a proper 12V supply.

Key features

• 12V electric horn for boats with a standard 12V DC system
• Drop-in hidden format with a low-profile face that sits neatly in a panel
• Black and white covers included for a cleaner visual match with different boat finishes
• Useful for new installations or retrofit work where a flush horn layout is preferred
• Built around ABYC horn requirements for boats up to 20 meters

Installation and fit

This horn is a good fit when you want sound signaling at the helm without adding a protruding horn body on deck or on top of the console. Before ordering for a replacement job, compare your existing panel opening, rear clearance, and 12V wiring setup so the new horn drops in cleanly and connects without extra rework.

Because it is a hidden horn, mounting location matters. A protected panel area usually makes more sense than a spot that takes constant direct spray, and the wiring should be routed as part of a proper horn circuit with the correct switch and protection already in place on the boat.

Use on board

This setup suits owners who want a cleaner exterior line on runabouts, center consoles, small cruisers, and sailboats without giving up an audible signal device at the helm. It is also a sensible replacement when the boat already has a flush-mounted horn and you want a straightforward 12V option with cover colors that blend in better with the surrounding panel.

What’s included

• Drop-in hidden horn
• Black cover
• White cover