Attwood Marine Drop-In Hidden Horn, 12V, Black and White Covers

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

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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