{"product_id":"hella-optilux-357211011-led-light-wiring-harness","title":"Hella Optilux 357211011 LED Light Wiring Harness","description":"\u003cp class=\"nvn-hero\"\u003eThe Hella Marine Optilux harness (357211011) is the clean way to power up to two LED lights or light bars from a single switch. It handles two lamps at up to 150 watts each and comes with the relay, switch, DT connector, and a 30 amp fuse already in the kit. Wire it in once and forget it.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eRunning a pair of LED lights or light bars off your boat's 12 volt system sounds simple, right up until you melt a dash switch or blow a fuse at the worst possible moment. This Hella Marine Optilux harness (part 357211011) is the clean, done-right way to wire two lights from a single switch. It's a complete kit. Relay, switch, weatherproof DT connector, and a 30 amp inline fuse all come in the box, so you're not sourcing parts from three different bins to finish the job.\u003c\/p\u003e\n\u003cp\u003eHere's why a harness like this matters. High-wattage lights pull real current, and a typical dash toggle isn't built to carry it. Wire the lights straight to the switch and that switch becomes the hottest, weakest link in the circuit. It'll fail on you, usually the first cold night you actually need the lights. This harness puts a relay between your switch and your lamps. The switch only carries the small trigger current, and the heavy load runs on short, fused battery cable through the relay. That's how you get lights that come on every time and a switch that lasts.\u003c\/p\u003e\n\u003cp\u003eCapacity is two lights at up to 150 watts each, 300 watts total, all on a 12 volt DC system. That covers a lot of real setups. A pair of spreader lights on a hardtop, fog and driving lamps on a center console, a couple of deck floods for night work, or dual light bars on a T-top. One switch, both lights, clean and simple.\u003c\/p\u003e\n\u003cp\u003eThe connector is a DT style Deutsch plug, which is the right call for a boat. Assembled correctly, it seals against spray and stays put in a chop. We still tell every customer the same thing: hit the pins with a little dielectric grease before you seat them, especially if you run in salt. Corrosion is what kills marine wiring, not the wire itself. A minute of prevention here saves you a flickering-light headache two seasons down the road.\u003c\/p\u003e\n\u003cp\u003eThink about where the relay lives before you start pulling wire. You want it somewhere dry and cool. Under the console or up near the helm is ideal. Down by the bilge or bolted to a hot engine cover is asking for trouble. Keep your connections tight, use a proper crimp on the DT pins instead of just twisting them, and you'll have a circuit that behaves. Two 150 watt lights pull somewhere around 25 amps at 12 volts, so the included 30 amp fuse gives you a bit of headroom while still protecting the wiring if something shorts.\u003c\/p\u003e\n\u003cp\u003eThe included switch gives you one clean control point for both lights. No fumbling with two separate toggles, no guessing which one runs which lamp. Flip it and both come on together. For a lot of boaters that single-switch simplicity is the whole reason to run a proper harness instead of a rat's nest of butt connectors behind the dash.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Anyone adding a pair of auxiliary lights and wanting to do it once. It's ideal for Optilux LED lights and light bars, and it'll happily run any 12 volt light that stays inside the 150 watt per lamp limit. What's it not for? If you're hanging something bigger than 150 watts on each side, this isn't your harness. You'd want a heavier setup with a bigger fuse and thicker cable. But for the vast majority of dual-light installs on the water, this is exactly the piece that makes the job easy and keeps it reliable.\u003c\/p\u003e\n\u003cp\u003eHella Marine builds gear around a fit-and-forget idea, and this harness lives up to it. It's a straightforward part that does one job and does it well. Match it with a pair of quality LED lamps, take your time on the connections, and you've got auxiliary lighting you won't have to think about again. Set it up right the first time and spend your energy on the water, not under the console with a test light.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e12 volt relay included, keeps heavy light current off your dash switch so the switch lasts\u003c\/li\u003e\n  \u003cli\u003ePowers up to two lights or light bars at 150 watts each, 300 watts total\u003c\/li\u003e\n  \u003cli\u003e30 amp inline fuse protects the circuit and your wiring\u003c\/li\u003e\n  \u003cli\u003eWeatherproof DT (Deutsch) connector for a sealed, corrosion-resistant joint\u003c\/li\u003e\n  \u003cli\u003eOn\/off switch included, one control point for both lights\u003c\/li\u003e\n  \u003cli\u003eComplete kit with relay, switch, connector, and fuse in one harness, no parts to source\u003c\/li\u003e\n  \u003cli\u003eBuilt for Optilux LED driving and fog lights and light bars\u003c\/li\u003e\n  \u003cli\u003e12 volt DC system compatible for boats, consoles, and hardtops\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\u003eHow many amp fuse does this harness use for LED light bars?\u003c\/summary\u003e\n    \u003cp\u003eIt comes with a 30 amp inline fuse. Two 150 watt lights draw roughly 25 amps at 12 volts, so 30 amps gives you a bit of headroom while still protecting the wiring. Lighter lights leave you even more margin.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much amperage does a 12 volt LED light draw?\u003c\/summary\u003e\n    \u003cp\u003eDivide watts by volts. A 150 watt light at 12 volts pulls about 12.5 amps, so two of them together land around 25 amps. That current is exactly why the kit uses a relay and a 30 amp fuse instead of running straight off a switch.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat size relay do I need for my light bars?\u003c\/summary\u003e\n    \u003cp\u003eNone to buy separately. The 12 volt relay is already in this harness and it's sized for the 300 watt total load. Plug it in and go.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy do I need a relay instead of wiring straight to a switch?\u003c\/summary\u003e\n    \u003cp\u003eHigh-wattage lights pull too much current for a typical dash switch, which will overheat and fail. The relay lets your switch carry only the small trigger current while the heavy load runs on short, fused cable. Your lights come on reliably and your switch survives.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan it run two lights from one switch?\u003c\/summary\u003e\n    \u003cp\u003eYes. That's the whole point. Both lamps, up to 150 watts each, come on together from the single included switch.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs the connector waterproof?\u003c\/summary\u003e\n    \u003cp\u003eIt uses a DT style Deutsch connector, which seals against spray when it's assembled correctly. For salt environments we recommend adding a little dielectric grease on the pins before you seat them.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it work with LED lights that aren't Optilux?\u003c\/summary\u003e\n    \u003cp\u003eIt's built for Optilux LED lights and light bars, but it will run any 12 volt light that stays within the 150 watt per lamp and 300 watt total limit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat if my lights are more than 150 watts each?\u003c\/summary\u003e\n    \u003cp\u003eThen this isn't the right harness. It's rated for 150 watts per light and 300 watts total. Larger lamps need a heavier setup with a bigger fuse and thicker cable.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhere should I mount the relay?\u003c\/summary\u003e\n    \u003cp\u003eSomewhere dry and cool, like under the console or up near the helm. Keep it away from bilge water and engine heat so it stays reliable.\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\u003eHella Optilux 357211011 Dual LED Light Wiring Harness\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\u003e357211011\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e760687161585\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Lights\u003c\/th\u003e\n\u003ctd\u003eOptilux LED lights and light bars\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLights Supported\u003c\/th\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMax Wattage Per Light\u003c\/th\u003e\n\u003ctd\u003e150 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTotal Load Capacity\u003c\/th\u003e\n\u003ctd\u003e300 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e12 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFuse Rating\u003c\/th\u003e\n\u003ctd\u003e30 Amp\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eRelay\u003c\/th\u003e\n\u003ctd\u003eIncluded, 12 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSwitch\u003c\/th\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConnector Type\u003c\/th\u003e\n\u003ctd\u003eDT (Deutsch)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHarness Type\u003c\/th\u003e\n\u003ctd\u003eDriving\/Fog Light Wiring Harness\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\": \"How many amp fuse does this harness use for LED light bars?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It comes with a 30 amp inline fuse. Two 150 watt lights draw roughly 25 amps at 12 volts, so 30 amps gives you a bit of headroom while still protecting the wiring. Lighter lights leave you even more margin.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much amperage does a 12 volt LED light draw?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Divide watts by volts. A 150 watt light at 12 volts pulls about 12.5 amps, so two of them together land around 25 amps. That current is exactly why the kit uses a relay and a 30 amp fuse instead of running straight off a switch.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What size relay do I need for my light bars?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"None to buy separately. The 12 volt relay is already in this harness and it's sized for the 300 watt total load. Plug it in and go.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why do I need a relay instead of wiring straight to a switch?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"High-wattage lights pull too much current for a typical dash switch, which will overheat and fail. The relay lets your switch carry only the small trigger current while the heavy load runs on short, fused cable. Your lights come on reliably and your switch survives.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can it run two lights from one switch?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. That's the whole point. Both lamps, up to 150 watts each, come on together from the single included switch.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is the connector waterproof?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It uses a DT style Deutsch connector, which seals against spray when it's assembled correctly. For salt environments we recommend adding a little dielectric grease on the pins before you seat them.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it work with LED lights that aren't Optilux?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's built for Optilux LED lights and light bars, but it will run any 12 volt light that stays within the 150 watt per lamp and 300 watt total limit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What if my lights are more than 150 watts each?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Then this isn't the right harness. It's rated for 150 watts per light and 300 watts total. Larger lamps need a heavier setup with a bigger fuse and thicker cable.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Where should I mount the relay?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Somewhere dry and cool, like under the console or up near the helm. Keep it away from bilge water and engine heat so it stays reliable.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Hella Marine","offers":[{"title":"Default Title","offer_id":45067223793757,"sku":"2008952","price":47.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_c9b6f7af-177c-42dc-b479-af626ec75a46.jpg?v=1789662934","url":"https:\/\/nvnmarine.com\/products\/hella-optilux-357211011-led-light-wiring-harness","provider":"NVN Marine","version":"1.0","type":"link"}