{"product_id":"stedi-smart-harness-dual-relay-dual-dtp-driving-light-wiring-kit","title":"STEDI SMART Harness | Dual Relay \u0026 Dual DTP Driving Light Wiring Kit","description":"\u003cdiv style=\"max-width: 1200px; margin: 0 auto; color: #222; line-height: 1.65;\"\u003e\n\u003cdiv style=\"background: #111; color: #fff; border-radius: 12px; padding: 32px;\"\u003e\n\u003cp style=\"color: #ff8200; font-weight: 800; letter-spacing: 1.5px; font-size: .85em; margin: 0;\"\u003eSTEDI SMART HARNESS SERIES\u003c\/p\u003e\n\u003ch2 style=\"color: #fff; margin: 12px 0;\"\u003eSMARTER WIRING. SIMPLER INSTALLATION.\u003c\/h2\u003e\n\u003cp style=\"color: #eee; margin: 0;\"\u003eA dual-relay, dual-connector plug-and-play wiring solution for high-beam-triggered STEDI driving lights. Intelligent polarity detection, included HB3\/H4 adaptors and a waterproof isolator switch simplify the installation of compatible auxiliary lighting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 35px;\"\u003e\n\u003cdiv style=\"flex: 1 1 155px; border: 1px solid #ddd; border-top: 5px solid #ff7200; background: #f5f5f5; border-radius: 8px; text-align: center; padding: 18px;\"\u003e\n\u003cstrong style=\"font-size: 1.22em;\"\u003e2 × 60 A\u003c\/strong\u003e\n\u003cp style=\"font-size: .85em; margin: 6px 0 0;\"\u003eSwitching relays\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 155px; border: 1px solid #ddd; border-top: 5px solid #ff7200; background: #f5f5f5; border-radius: 8px; text-align: center; padding: 18px;\"\u003e\n\u003cstrong style=\"font-size: 1.22em;\"\u003e2 × DTP\u003c\/strong\u003e\n\u003cp style=\"font-size: .85em; margin: 6px 0 0;\"\u003eOutput connectors\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 155px; border: 1px solid #ddd; border-top: 5px solid #ff7200; background: #f5f5f5; border-radius: 8px; text-align: center; padding: 18px;\"\u003e\n\u003cstrong style=\"font-size: 1.22em;\"\u003e10 AWG\u003c\/strong\u003e\n\u003cp style=\"font-size: .85em; margin: 6px 0 0;\"\u003eHeavy-duty cabling\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 155px; border: 1px solid #ddd; border-top: 5px solid #ff7200; background: #f5f5f5; border-radius: 8px; text-align: center; padding: 18px;\"\u003e\n\u003cstrong style=\"font-size: 1.22em;\"\u003eHB3 + H4\u003c\/strong\u003e\n\u003cp style=\"font-size: .85em; margin: 6px 0 0;\"\u003eAdaptors included\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection role=\"img\" style=\"box-sizing: border-box; display: flex; align-items: center; justify-content: flex-start; min-height: clamp(330px,40vw,470px); border-radius: 12px; overflow: hidden; padding: clamp(24px,5vw,45px); margin: 32px 0; background-color: #111; background-image: linear-gradient(90deg,rgba(0,0,0,.65) 0%,rgba(0,0,0,.42) 35%,rgba(0,0,0,.07) 70%,transparent 100%),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0486\/0041\/6423\/files\/stedi-smart-harness-intelligent-switching.jpg?v=1791494704'); background-size: cover; background-position: center center;\"\u003e\n\u003cdiv style=\"max-width: 500px; color: #fff; text-shadow: 0 1px 3px rgba(0,0,0,.45);\"\u003e\n\u003cp style=\"font-weight: 800; color: #ff8200; letter-spacing: 1.5px; font-size: .84em; margin: 0 0 10px;\"\u003eSMART HIGH-BEAM DETECTION\u003c\/p\u003e\n\u003ch2 style=\"color: #fff; font-size: clamp(1.65rem,3vw,2.5rem); line-height: 1.13; margin: 0 0 15px;\"\u003eTHE DEVIL IS IN THE DETAILS.\u003c\/h2\u003e\n\u003cp style=\"margin: 0; color: #fff; line-height: 1.6;\"\u003eA built-in microprocessor automatically detects positive- or negative-switched vehicle systems. That takes the guesswork out of wiring auxiliary driving lights to the high beam.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection role=\"img\" style=\"box-sizing: border-box; display: flex; align-items: center; justify-content: flex-end; min-height: clamp(330px,40vw,470px); border-radius: 12px; overflow: hidden; padding: clamp(24px,5vw,45px); margin: 32px 0; background-color: #111; background-image: linear-gradient(270deg,rgba(0,0,0,.65) 0%,rgba(0,0,0,.42) 35%,rgba(0,0,0,.07) 70%,transparent 100%),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0486\/0041\/6423\/files\/stedi-smart-harness-high-output-wiring.jpg?v=1791494708'); background-size: cover; background-position: center center;\"\u003e\n\u003cdiv style=\"max-width: 500px; color: #fff; text-shadow: 0 1px 3px rgba(0,0,0,.45);\"\u003e\n\u003cp style=\"font-weight: 800; color: #ff8200; letter-spacing: 1.5px; font-size: .84em; margin: 0 0 10px;\"\u003eDUAL RELAY. DUAL CONNECTOR.\u003c\/p\u003e\n\u003ch2 style=\"color: #fff; font-size: clamp(1.65rem,3vw,2.5rem); line-height: 1.13; margin: 0 0 15px;\"\u003eHIGH-PERFORMANCE OUTPUT.\u003c\/h2\u003e\n\u003cp style=\"margin: 0; color: #fff; line-height: 1.6;\"\u003eTwo heavy-duty relays and dual DTP outputs support compatible pairs of high-performance LED driving lights or slim light bars. The 10 AWG wiring is built for demanding setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection role=\"img\" style=\"box-sizing: border-box; display: flex; align-items: center; justify-content: flex-start; min-height: clamp(330px,40vw,470px); border-radius: 12px; overflow: hidden; padding: clamp(24px,5vw,45px); margin: 32px 0; background-color: #111; background-image: linear-gradient(90deg,rgba(0,0,0,.65) 0%,rgba(0,0,0,.42) 35%,rgba(0,0,0,.07) 70%,transparent 100%),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0486\/0041\/6423\/files\/stedi-smart-harness-plug-play-installation.jpg?v=1791494712'); background-size: cover; background-position: center center;\"\u003e\n\u003cdiv style=\"max-width: 500px; color: #fff; text-shadow: 0 1px 3px rgba(0,0,0,.45);\"\u003e\n\u003cp style=\"font-weight: 800; color: #ff8200; letter-spacing: 1.5px; font-size: .84em; margin: 0 0 10px;\"\u003eREADY FOR INSTALLATION\u003c\/p\u003e\n\u003ch2 style=\"color: #fff; font-size: clamp(1.65rem,3vw,2.5rem); line-height: 1.13; margin: 0 0 15px;\"\u003ePLUG IN. LIGHT UP.\u003c\/h2\u003e\n\u003cp style=\"margin: 0; color: #fff; line-height: 1.6;\"\u003eIncluded HB3 and H4 piggyback adaptors trigger compatible driving lights from the factory high beam, with a waterproof isolator switch for convenient control. Confirm vehicle compatibility before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003ch2\u003eWhat Makes the SMART Harness Different?\u003c\/h2\u003e\n\u003cp\u003eA conventional wiring harness can require additional diagnosis on modern vehicles with complex high-beam switching. The STEDI SMART Harness uses a built-in microprocessor to detect positive and negative switching automatically, helping avoid unnecessary wiring modifications on supported installations.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 20px 0 35px;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: white;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eSTEDI part number\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eWIRQKFT-D-RELAY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f4f4f4;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eOutput connections\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003e2 × DTP connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: white;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eSwitching relays\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003e2 × 12 V \/ 60 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f4f4f4;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eFuse protection\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003e2 × 12 V \/ 35 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: white;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eMaximum load\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003e35 A at 12 V, per STEDI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f4f4f4;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eHarness cable\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003e10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: white;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eHigh-beam input\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eIncluded HB3 and H4 piggyback adaptors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f4f4f4;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eSwitch\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eWaterproof on\/off isolation switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: white;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eHigh-beam switching\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eAutomatic positive \/ negative polarity detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f4f4f4;\"\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 1px solid #ddd; width: 42%;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003e12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOne STEDI Dual Relay \/ Dual DTP SMART Harness\u003c\/li\u003e\n\u003cli\u003eHB3 and H4 high-beam piggyback adaptors\u003c\/li\u003e\n\u003cli\u003eWaterproof isolator switch\u003c\/li\u003e\n\u003cli\u003eInstruction leaflet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLighting fixtures and vehicle-specific adaptors other than HB3\/H4 are not included. Confirm connector type and electrical load for your installation.\u003c\/p\u003e\n\u003cdiv style=\"background: #f4f4f4; border-left: 6px solid #ff7200; border-radius: 9px; padding: 25px; margin: 34px 0;\"\u003e\n\u003cp style=\"font-weight: 800; letter-spacing: 1.4px; color: #e85f00; font-size: .84em; margin: 0;\"\u003eCAP-IT INSTALLATION\u003c\/p\u003e\n\u003ch2\u003eConnect Your Driving Lights Properly.\u003c\/h2\u003e\n\u003cp style=\"margin: 0;\"\u003eAsk a participating Cap-it location about selecting the correct harness, checking your vehicle's high-beam connector and professionally mounting and wiring STEDI auxiliary lighting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"border-top: 1px solid #ddd;\"\u003e\n\u003cdetails style=\"padding: 14px 0; border-bottom: 1px solid #ddd;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer; list-style: none;\"\u003e\u003cspan style=\"color: #ff7200; font-size: 1.3em; margin-right: 10px;\"\u003e+\u003c\/span\u003eWill this harness work with negatively switched headlights?\u003c\/summary\u003e\n\u003cp style=\"padding-left: 26px; margin: 10px 0 0;\"\u003eSTEDI specifies a built-in microprocessor that detects positive- or negative-switched high-beam circuits. Confirm adaptor and vehicle-specific compatibility before fitting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"padding: 14px 0; border-bottom: 1px solid #ddd;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer; list-style: none;\"\u003e\u003cspan style=\"color: #ff7200; font-size: 1.3em; margin-right: 10px;\"\u003e+\u003c\/span\u003eWhich high-beam connectors are included?\u003c\/summary\u003e\n\u003cp style=\"padding-left: 26px; margin: 10px 0 0;\"\u003eHB3 and H4 piggyback adaptors are included. Other bulb types and vehicle-specific adaptors may be available separately.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"padding: 14px 0; border-bottom: 1px solid #ddd;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer; list-style: none;\"\u003e\u003cspan style=\"color: #ff7200; font-size: 1.3em; margin-right: 10px;\"\u003e+\u003c\/span\u003eWill the driving lights turn on with low beam?\u003c\/summary\u003e\n\u003cp style=\"padding-left: 26px; margin: 10px 0 0;\"\u003eThe harness is designed to trigger auxiliary driving lights from the factory high beam. Its included switch functions as an isolator.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"padding: 14px 0; border-bottom: 1px solid #ddd;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer; list-style: none;\"\u003e\u003cspan style=\"color: #ff7200; font-size: 1.3em; margin-right: 10px;\"\u003e+\u003c\/span\u003eHow many light outputs are there?\u003c\/summary\u003e\n\u003cp style=\"padding-left: 26px; margin: 10px 0 0;\"\u003eThere are two DTP output connections and two relays, making this the dual-relay harness rather than the single-relay SMART Harness.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"padding: 14px 0; border-bottom: 1px solid #ddd;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer; list-style: none;\"\u003e\u003cspan style=\"color: #ff7200; font-size: 1.3em; margin-right: 10px;\"\u003e+\u003c\/span\u003eDoes it include instructions?\u003c\/summary\u003e\n\u003cp style=\"padding-left: 26px; margin: 10px 0 0;\"\u003eYes. STEDI lists an instruction leaflet as supplied.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #111; color: #eee; border-radius: 12px; padding: 27px; margin: 34px 0;\"\u003e\n\u003cp style=\"color: #ff8200; font-weight: 800; letter-spacing: 1.4px; font-size: .85em; margin: 0;\"\u003eTHE CAP-IT TAKE\u003c\/p\u003e\n\u003ch2 style=\"color: #fff; margin: 10px 0;\"\u003eTHE RIGHT HARNESS FOR TWO OUTPUTS.\u003c\/h2\u003e\n\u003cp style=\"margin: 0;\"\u003eFor dual driving-light installations where high-beam triggering and modern vehicle compatibility matter, this purpose-built STEDI harness offers a cleaner starting point than assembling a custom wiring setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"STEDI","offers":[{"title":"Default Title","offer_id":67677647995116,"sku":"WIRQKFT-D-RELAY","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0486\/0041\/6423\/files\/stedi-smart-harness-dual-relay-cat-fx-installation.webp?v=1791494999","url":"https:\/\/shop.capit.com\/products\/stedi-smart-harness-dual-relay-dual-dtp-driving-light-wiring-kit","provider":"Shop Cap-it","version":"1.0","type":"link"}