{"product_id":"hella-rallye-4000-compact-wiring-harness-relay-switch","title":"Hella Rallye 4000 Compact Wiring Harness with Relay and Switch","description":"\u003cp class=\"nvn-hero\"\u003eThis is the genuine Hella wiring harness built for the Rallye 4000 Compact Series halogen lamps. It comes with the relay and on\/off switch already matched to the job, so a pair of auxiliary driving lamps gets full battery voltage while your dash switch stays cool. Everything you need to wire two lamps, in one box.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eIf you've ever wired a pair of Rallye 4000 Compact lamps straight off a dash switch, you already know the problem. The switch gets hot, the lamps run dim, and after a season the contacts start to pit. This is the harness that fixes all of that. It's the genuine Hella wiring kit built specifically for the Rallye 4000 Compact Series halogen lamps, and it comes with the relay and the switch already matched to the job.\u003c\/p\u003e\n\u003cp\u003eHere's what the relay does for you. Auxiliary driving lamps pull real current. Running that load through a small dash switch and thin factory wire means voltage drop, and voltage drop means dimmer light right when you want it most. The relay lets a small trigger wire do the switching while heavy-gauge harness wire carries the actual lamp current straight from the battery. Your lamps see closer to full system voltage, so they burn bright and even. And the switch on your dash only handles a tiny signal, so it stays cool and lasts.\u003c\/p\u003e\n\u003cp\u003eThe kit wires two lamps. You get the relay, the on\/off switch, and the connectors laid out to drop into a Rallye 4000 Compact install without splicing together a harness from scratch. That's the part people underestimate. Building your own relay harness with a fuse holder, the right connectors, and a clean switch feed is an afternoon of work and a bag of parts. This gives you all of it in one box, sized and terminated for the lamps it's meant to run.\u003c\/p\u003e\n\u003cp\u003eWhere does it go? On trucks, SUVs, Jeeps, and overland rigs running Rallye 4000 Compact driving or fog lamps up front. If you're adding a pair of these lamps to a bumper, a light bar tab, or a bull bar, this is the wiring you want behind them. It's a 12V system, matched to the 12-volt halogen lamps the Rallye 4000 Compact Series uses.\u003c\/p\u003e\n\u003cp\u003eThe included switch is a simple on\/off, which is exactly what most people want for a set of auxiliary lamps. Flip it on when you need the extra light, flip it off when you're back on lit roads. Because it only carries the relay's trigger signal, you can mount it in a small blank on the dash without running heavy wire through the firewall.\u003c\/p\u003e\n\u003cp\u003eA word on what this is and isn't. This is the harness, relay, and switch. The lamps themselves are sold separately, because plenty of folks are replacing a chewed-up harness or upgrading the wiring on lamps they already own. If you're buying lamps and wiring together for the first time, just make sure your lamps are the Rallye 4000 Compact Series so the connectors match. Get that right and the rest is straightforward.\u003c\/p\u003e\n\u003cp\u003eThink about the scenarios these lamps live in. Early starts on a hunting lease. Fire roads at night. A gravel two-track where your factory headlights just don't reach far enough. In every one of those, the harness is what makes the difference between lamps that punch light way down the road and lamps that flicker and fade. Do the wiring right the first time and you never think about it again.\u003c\/p\u003e\n\u003cp\u003eWhy Hella? Because the whole point of a driving-lamp harness is that you wire it once and forget it. Hella builds this kit to the same standard as the lamps, with connectors and a relay meant to shrug off heat, vibration, and years of use. Route it away from exhaust heat, give the connectors a shot of dielectric grease, and this harness will outlast the truck it's bolted to.\u003c\/p\u003e\n\u003cp\u003eInstallation is honest work but it isn't hard. Mount the relay somewhere dry near the battery, run the switch lead into the cab, tie the trigger into a switched 12V source if you want the lamps to only work with the key on, and connect the lamp leads. If you've wired accessories before, you'll have it done in an evening. And if this is your first relay harness, the fact that it's pre-built takes most of the guesswork out.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eGenuine Hella harness built for the Rallye 4000 Compact Series halogen lamps, so the connectors match without splicing\u003c\/li\u003e\n  \u003cli\u003eIncludes the relay, so full battery voltage reaches the lamps and your dash switch stays cool\u003c\/li\u003e\n  \u003cli\u003eOn\/off switch included, carrying only the trigger signal for a clean, low-heat dash install\u003c\/li\u003e\n  \u003cli\u003eWires two lamps from one kit, with the connectors already terminated\u003c\/li\u003e\n  \u003cli\u003e12V system, matched to the 12-volt halogen lamps the Rallye 4000 Compact uses\u003c\/li\u003e\n  \u003cli\u003ePre-built harness saves an afternoon of sourcing fuse holders, connectors, and gauge wire\u003c\/li\u003e\n  \u003cli\u003eFit-and-forget Hella build quality, made to handle heat and vibration for years\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 lamps does this harness fit?\u003c\/summary\u003e\n    \u003cp\u003eIt's built for the Hella Rallye 4000 Compact Series halogen lamps. The connectors are sized and terminated for that series, so if your lamps are Rallye 4000 Compact, it drops right in.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre the lamps included?\u003c\/summary\u003e\n    \u003cp\u003eNo. This kit is the wiring harness, relay, and switch only. The lamps are sold separately, which suits folks replacing a worn harness or upgrading the wiring on lamps they already own.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy do I need the relay?\u003c\/summary\u003e\n    \u003cp\u003eDriving lamps pull real current. The relay lets heavy harness wire carry that load straight from the battery while a small switch does the triggering. Your lamps get closer to full voltage and your dash switch stays cool.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it come with a switch?\u003c\/summary\u003e\n    \u003cp\u003eYes. A simple on\/off switch is included. It only carries the relay's trigger signal, so you can mount it in a small dash blank without running heavy wire.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow many lamps will it run?\u003c\/summary\u003e\n    \u003cp\u003eThe harness is set up to wire two lamps.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat voltage is it?\u003c\/summary\u003e\n    \u003cp\u003eIt's a 12V system, matched to the 12-volt halogen lamps the Rallye 4000 Compact Series uses.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I have to build my own connectors?\u003c\/summary\u003e\n    \u003cp\u003eNo. The connectors come terminated and laid out for a Rallye 4000 Compact install, so there's no splicing a harness together from scratch.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAny tips for making it last?\u003c\/summary\u003e\n    \u003cp\u003eMount the relay somewhere dry near the battery, keep the wiring away from exhaust heat, and hit the connectors with dielectric grease. Wire it once and forget it.\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 Rallye 4000 Compact Series Wiring Harness with Relay and Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHella\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eHella\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e148541001\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e4082300075472\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eDriving and Fog Light Wiring Harness\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Lamps\u003c\/th\u003e\n\u003ctd\u003eRallye 4000 Compact Series Halogen Lamps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLamps Supported\u003c\/th\u003e\n\u003ctd\u003eTwo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eRelay\u003c\/th\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSwitch\u003c\/th\u003e\n\u003ctd\u003eOn\/off, included\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConnectors\u003c\/th\u003e\n\u003ctd\u003eIncluded, terminated\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem Voltage\u003c\/th\u003e\n\u003ctd\u003e12V DC\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 lamps does this harness fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's built for the Hella Rallye 4000 Compact Series halogen lamps. The connectors are sized and terminated for that series, so if your lamps are Rallye 4000 Compact, it drops right in.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Are the lamps included?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This kit is the wiring harness, relay, and switch only. The lamps are sold separately, which suits folks replacing a worn harness or upgrading the wiring on lamps they already own.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why do I need the relay?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Driving lamps pull real current. The relay lets heavy harness wire carry that load straight from the battery while a small switch does the triggering. Your lamps get closer to full voltage and your dash switch stays cool.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it come with a switch?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. A simple on\/off switch is included. It only carries the relay's trigger signal, so you can mount it in a small dash blank without running heavy wire.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How many lamps will it run?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The harness is set up to wire two lamps.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What voltage is it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a 12V system, matched to the 12-volt halogen lamps the Rallye 4000 Compact Series uses.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I have to build my own connectors?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. The connectors come terminated and laid out for a Rallye 4000 Compact install, so there's no splicing a harness together from scratch.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Any tips for making it last?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Mount the relay somewhere dry near the battery, keep the wiring away from exhaust heat, and hit the connectors with dielectric grease. Wire it once and forget it.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Hella","offers":[{"title":"Default Title","offer_id":45059352789085,"sku":"2008422","price":120.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_8543ea49-973c-4615-b33f-f8f13c8c200a.jpg?v=1789504222","url":"https:\/\/nvnmarine.com\/products\/hella-rallye-4000-compact-wiring-harness-relay-switch","provider":"NVN Marine","version":"1.0","type":"link"}