Hella Marine MST6E LED Lighthead, Blue Light, 12-24V, 21 Flash Patterns

Overview

The Hella Marine 358111701 is a surface-mount LED blue lighthead that runs on 11 to 30 VDC for use on both 12V and 24V electrical systems. It uses six 1W LEDs with an average power draw of about 5.5W and a listed maximum of 10.5W, which helps when you are planning loads on a small boat battery bank.

This is a low-profile lighthead intended for locations where you want a clean mount and dependable operation through vibration. It supports selectable flash patterns, stores the last-used pattern, and can be synchronized with additional units so multiple lightheads can flash together or alternate when wired for it.

Blue lighting is often restricted to specific vessel types and operational uses. Confirm local requirements and onboard operating procedures before installing it as an externally visible signal light.

Key features

• 11 to 30 VDC input for 12V and 24V systems
• Blue LED lighthead with selectable flash patterns and memory recall of the last-used setting
• Six 1W LEDs with average power around 5.5W and listed maximum power of 10.5W
• Synchronization support for multi-light installs (simultaneous or alternating flash behavior when wired accordingly)
• Reverse polarity protection to help prevent damage from accidental wiring reversal
• Weatherproof and vibration resistant construction for exterior or interior mounting locations
• Aluminum base to help shed heat when mounted to a solid surface
• Wire leads included for power, ground, and pattern or sync control

Installation and setup

Mount the lighthead to a solid, flat area where the lens is not blocked by rails, canvas, or deck gear. On boats, choose a location that stays out of constant spray and direct impact, and route wiring so it is supported and protected from chafe. If you pass wiring through a bulkhead or hardtop, use a grommet and seal the opening so water cannot track along the cable into the structure.

For best results in saltwater environments, keep splices above the bilge and use marine-grade heat-shrink connections. Leave a small drip loop before the cable enters a console, cabin top, or junction box so water runs off instead of into the enclosure.

Electrical and system integration

This lighthead is built for multi-voltage DC systems (11 to 30 VDC). Typical current draw is about 0.4A average at 12.8V and about 0.22A average at 24V, with listed maximum current of about 0.8A at 12.8V and about 0.44A at 24V. Plan circuit sizing and switch gear with those loads in mind.

Use a dedicated, properly protected circuit and place a fuse close to the power source; a 3A fuse is a common match for this unit. Power and ground are handled through the primary leads, and the control lead is used for flash-pattern selection and synchronization when installing multiple lightheads.

Use cases on board

This style of lighthead is commonly used as a compact warning or marker light on workboats, patrol and security craft, and support vessels that need a blue signal light while operating near docks, ramps, or in controlled areas. It can also be useful on trailers or shore-side support equipment that shares power with the vessel.

It is a good match for operators who want a low-profile blue lighthead that can be used across both 12V and 24V boats without adding voltage conversion hardware.

Maintenance and care

Rinse the lens and housing with fresh water after salt exposure and check the wiring exit point for strain or chafe. Periodically confirm mounting fasteners stay tight, especially on hardtops and other areas that see constant vibration.

Shipping
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Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

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