{"product_id":"hella-marine-1683-halogen-bulb-24v-29w-ba15s","title":"Hella Marine 1683 Halogen Bulb 24V 29W BA15S","description":"\u003cp class=\"nvn-hero\"\u003eThe Hella Marine 1683 is a 24-volt, 29-watt halogen replacement bulb with a BA15S single-contact bayonet base and a clean white output. It's the drop-in fix for 24-volt cabin, panel, and utility fixtures that take a standard bayonet bulb. Sold as a single bulb, built to Hella Marine's fit-and-forget standard.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Hella Marine 1683 is a 24-volt, 29-watt halogen replacement bulb with a BA15S bayonet base. It throws a clean white light, and it's sold as a single bulb. If you've got a 24-volt fixture aboard that takes a single-contact bayonet bulb and the old one has finally given up, this is the drop-in replacement you're after.\u003c\/p\u003e\n\u003cp\u003eFirst thing to check, and it's the important one. This is a 24-volt bulb. Not 12-volt. A lot of smaller recreational boats run 12-volt house systems, and this bulb isn't for those. Where you'll see 24-volt wiring is on larger diesel vessels, commercial boats, and workboats, plus plenty of trucks, buses, and heavy equipment. Run a 24-volt bulb on a 12-volt circuit and it'll glow dim and nearly useless. Put a 12-volt bulb on a 24-volt circuit and you'll pop it in a hurry. So confirm your system voltage before you order. It really does matter.\u003c\/p\u003e\n\u003cp\u003eThe base is a BA15S. That's a 15-millimeter bayonet with a single contact, the kind you push in and give a quarter turn to lock. The two pins on the collar sit at the same height, so it only drops into a single-contact socket, never a dual-contact one. The glass envelope is an S8 shape, which works out to roughly an inch across at the widest point. Between the base code and the envelope size, you can match this against whatever fixture you're servicing and know it'll seat and clear the housing.\u003c\/p\u003e\n\u003cp\u003eWhere does a bulb like this actually live? Usually inside the small fixtures that don't ask for much but can't be allowed to fail. Interior and cabin lights. Instrument and panel illumination. Courtesy and step lights. Some navigation and utility lamps are built around the bayonet base too. On a 24-volt boat, any of those could be running a BA15S bulb, and when one burns out you want a known-good replacement rather than whatever's rattling around the parts drawer.\u003c\/p\u003e\n\u003cp\u003eIt's a halogen, and that brings a couple of things worth knowing. Halogen burns hotter and whiter than an old-school incandescent, so you get brighter, cleaner light for the same draw. The flip side is the handling. Don't touch the glass with bare fingers. The oil from your skin leaves a residue that bakes into a hot spot once the bulb lights up, and that hot spot is where the glass tends to fail early. Hold it by the metal base, or use a clean cloth or the packaging. If you do smudge it, wipe it down with a little rubbing alcohol before you power it up and you're fine.\u003c\/p\u003e\n\u003cp\u003eThis is a single-filament bulb, which follows from that single-contact base. One filament, one brightness, one circuit. It isn't a stop-and-tail style bulb that runs two brightness levels off two filaments. And it ships as a single bulb, not a two-pack, so if you like to keep a spare in the ditch bag or the spares box, grab a second one while you're at it.\u003c\/p\u003e\n\u003cp\u003eHella Marine builds these on a simple idea they call fit and forget. Decades of making lamps for life on the water means tight quality control and materials picked to shrug off a harsh, salty environment. You're buying a bulb you install once and stop thinking about, which is exactly what you want from something tucked inside a nav light or a cabin fixture where getting back at it later is a real pain.\u003c\/p\u003e\n\u003cp\u003eOne honest note before you buy. This is a replacement bulb, not a complete lamp or fixture. It's the glass-and-base element that goes inside a housing you already own. If your fixture is designed around a 24-volt BA15S single-contact halogen, the 1683 is the right part. If you're not sure what your old bulb was, pull it, read the base and the markings on the glass, and match the numbers. Measure twice, order once.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e24-volt operation at 29 watts, sized for larger boats and commercial rigs running a 24V system, not 12V\u003c\/li\u003e\n  \u003cli\u003eBA15S single-contact bayonet base, push-and-quarter-turn install into a standard single-contact socket\u003c\/li\u003e\n  \u003cli\u003eS8 glass envelope, roughly one inch across, easy to match against your existing fixture\u003c\/li\u003e\n  \u003cli\u003eHalogen output, brighter and whiter than standard incandescent for the same job\u003c\/li\u003e\n  \u003cli\u003eClean white light color, consistent across the life of the bulb\u003c\/li\u003e\n  \u003cli\u003eSingle filament, one brightness level off the single-contact base\u003c\/li\u003e\n  \u003cli\u003eSold as a single bulb, simple to pick up a spare for the kit\u003c\/li\u003e\n  \u003cli\u003eHella Marine fit-and-forget build, materials chosen for life on the water\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Hella Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat base does the Hella Marine 1683 use?\u003c\/summary\u003e\n    \u003cp\u003eA BA15S base. That's a 15-millimeter bayonet with a single contact and two collar pins at the same height, so you push it in and give it a quarter turn to lock. It fits single-contact sockets only, not dual-contact ones.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a 12-volt or 24-volt bulb?\u003c\/summary\u003e\n    \u003cp\u003eIt's a 24-volt bulb, rated at 29 watts. It's meant for 24-volt systems you'll find on larger diesel vessels, commercial boats, and heavy equipment. Don't run it on a 12-volt circuit, where it'll glow dim and useless.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow many bulbs come in the package?\u003c\/summary\u003e\n    \u003cp\u003eOne. The 1683 is sold as a single bulb, not a multi-pack. If you want a spare on hand, order a second one.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it a halogen or an LED bulb?\u003c\/summary\u003e\n    \u003cp\u003eIt's a halogen. That means brighter, whiter light than an old incandescent of the same wattage, with the standard halogen handling tradeoff of not touching the glass with bare fingers.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat color is the light?\u003c\/summary\u003e\n    \u003cp\u003eWhite. It's a clean white halogen output that stays consistent over the bulb's life.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a single or dual filament bulb?\u003c\/summary\u003e\n    \u003cp\u003eSingle filament. That follows from the single-contact BA15S base, so it runs one brightness off one circuit. It isn't a two-filament stop-and-tail style bulb.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the S8 designation mean?\u003c\/summary\u003e\n    \u003cp\u003eS8 is the shape and size of the glass envelope. It works out to roughly one inch across at the widest point, which helps you confirm the bulb will clear your fixture housing.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy can't I touch the glass with my fingers?\u003c\/summary\u003e\n    \u003cp\u003eThe oil from your skin bakes onto the hot glass and creates a hot spot that shortens the bulb's life. Handle it by the metal base, and if you smudge the glass, wipe it with a little rubbing alcohol before powering it up.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is this bulb used for?\u003c\/summary\u003e\n    \u003cp\u003eIt's a general replacement for 24-volt fixtures that take a BA15S single-contact bayonet bulb, things like cabin and interior lights, panel and instrument illumination, and courtesy or utility lamps. Pull your old bulb and match the base and markings to be sure.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this come with a fixture or housing?\u003c\/summary\u003e\n    \u003cp\u003eNo. It's just the replacement bulb, the glass-and-base element that goes inside a housing you already own. It isn't a complete lamp.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003e1683 Halogen; 29 Watt; 24 Volt; White; Single\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHella Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e1683\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e760687144175\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBulb Technology\u003c\/th\u003e\n\u003ctd\u003eHalogen\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e24 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003ctd\u003e29 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBase Type\u003c\/th\u003e\n\u003ctd\u003eBA15S\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBase Configuration\u003c\/th\u003e\n\u003ctd\u003eBayonet, single contact\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBulb Shape\u003c\/th\u003e\n\u003ctd\u003eS8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLight Color\u003c\/th\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eSingle bulb\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What base does the Hella Marine 1683 use?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A BA15S base. That's a 15-millimeter bayonet with a single contact and two collar pins at the same height, so you push it in and give it a quarter turn to lock. It fits single-contact sockets only, not dual-contact ones.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a 12-volt or 24-volt bulb?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a 24-volt bulb, rated at 29 watts. It's meant for 24-volt systems you'll find on larger diesel vessels, commercial boats, and heavy equipment. Don't run it on a 12-volt circuit, where it'll glow dim and useless.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How many bulbs come in the package?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"One. The 1683 is sold as a single bulb, not a multi-pack. If you want a spare on hand, order a second one.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it a halogen or an LED bulb?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a halogen. That means brighter, whiter light than an old incandescent of the same wattage, with the standard halogen handling tradeoff of not touching the glass with bare fingers.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What color is the light?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"White. It's a clean white halogen output that stays consistent over the bulb's life.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a single or dual filament bulb?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Single filament. That follows from the single-contact BA15S base, so it runs one brightness off one circuit. It isn't a two-filament stop-and-tail style bulb.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the S8 designation mean?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"S8 is the shape and size of the glass envelope. It works out to roughly one inch across at the widest point, which helps you confirm the bulb will clear your fixture housing.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why can't I touch the glass with my fingers?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The oil from your skin bakes onto the hot glass and creates a hot spot that shortens the bulb's life. Handle it by the metal base, and if you smudge the glass, wipe it with a little rubbing alcohol before powering it up.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is this bulb used for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a general replacement for 24-volt fixtures that take a BA15S single-contact bayonet bulb, things like cabin and interior lights, panel and instrument illumination, and courtesy or utility lamps. Pull your old bulb and match the base and markings to be sure.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does this come with a fixture or housing?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. It's just the replacement bulb, the glass-and-base element that goes inside a housing you already own. 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