{"product_id":"mecmo-4-pin-trailer-wiring-harness-56217-for-toyota-highlander-lexus-rx-plug-and-play-4-way-flat-with-dust-cover","title":"MECMO 4-Pin Trailer Wiring Harness 56217 for Toyota Highlander \u0026 Lexus RX — Plug-and-Play 4-Way Flat with Dust Cover","description":"\u003cp\u003e\u003cstrong\u003eThe MECMO 56217 4-pin trailer wiring harness is a factory-fit, plug-and-play T-connector that delivers reliable tail, brake, and turn-signal power for compatible Toyota Highlander and Lexus RX models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you tow a small trailer, cargo carrier, or bike rack with a 2008–2019 Toyota Highlander (including Hybrid, Limited, XLE, SE, LE) or a compatible 2018–2022 Lexus RX 350\/350L (verify model years and exclusions), this harness provides a factory-style connection without cutting factory wires. Designed as a direct replacement that installs behind the tail lamp, the MECMO 4-way flat connector preserves your vehicle’s original wiring integrity and adds a dust cover and easy-grip socket for everyday durability.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the MECMO harness install so quickly?\u003c\/h3\u003e\n\u003cp\u003eInstallation is plug-and-play: the T-connector plugs into the vehicle’s factory wiring harness behind the tail light—no splicing or special tools required. This minimizes installation errors and leaves factory wiring intact.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit OEM-style T-connector tailored to listed models\u003c\/li\u003e\n  \u003cli\u003ePlugs into pre-wired port behind tail lamp\u003c\/li\u003e\n  \u003cli\u003eNo cutting, crimping, or soldering needed\u003c\/li\u003e\n  \u003cli\u003eIncludes protective dust cover to keep terminals clean\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat trailer lights and functions does this 4-pin connector support?\u003c\/h3\u003e\n\u003cp\u003eThe MECMO 4-pin flat plug supplies synchronized power for running lights, turn signals, and brake lights—everything required for basic trailer lighting. It’s intended for trailers that do not require a separate reverse or electric brake circuit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTail\/running lights powered from vehicle circuits\u003c\/li\u003e\n  \u003cli\u003eBrake lights and turn signals integrated into the flat plug\u003c\/li\u003e\n  \u003cli\u003eStandard 4-way flat for common small trailers and accessories\u003c\/li\u003e\n  \u003cli\u003eNot designed for trailer brakes or auxiliary power feeds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the MECMO wiring harness built to resist road conditions?\u003c\/h3\u003e\n\u003cp\u003eMECMO uses heavy-duty bonded wire and tin-plated copper terminals for reliable conductivity and corrosion resistance in harsh environments. The connector shell includes easy-grip tabs for secure handling and a protective dust cap to keep contaminants out when not in use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBonded wire construction reduces stress on connections\u003c\/li\u003e\n  \u003cli\u003eTin-plated copper terminals improve conductivity and resist corrosion\u003c\/li\u003e\n  \u003cli\u003eEasy-grip tabs provide positive insertion and removal\u003c\/li\u003e\n  \u003cli\u003eDust cover protects pins from dirt and moisture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and model years are compatible with this harness?\u003c\/h3\u003e\n\u003cp\u003eThis harness is a custom fit for specific model years and trims—confirm compatibility before ordering. It fits 2008–2019 Toyota Highlander models (including Hybrid, Limited, XLE, SE, LE) and select Lexus RX 350\/RX 350L years with the factory wiring port; it excludes vehicles with dual exhaust and some other variants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Toyota Highlander 2008–2019 (verify trim and factory wiring)\u003c\/li\u003e\n  \u003cli\u003eFits Lexus RX 350 and RX 350L for listed 2018–2022\/2018–2021 years as specified\u003c\/li\u003e\n  \u003cli\u003eNot compatible with dual-exhaust Lexus RX 350L variants where noted\u003c\/li\u003e\n  \u003cli\u003eAlways verify your vehicle year and tail light connector type before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The MECMO 56217 harness is ideal for Highlander and compatible Lexus RX owners who need a tidy, reversible, and OEM-like trailer wiring solution for everyday towing of small trailers, cargo carriers, and hitch-mounted accessories. It’s a good choice for DIY installers and pro shops that want a reliable four-way connection without modifying factory wiring. If you require electric brakes, 7-pin auxiliary power, or custom heavy-duty towing wiring, consider a compatible adapter or a different harness designed for those functions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this harness work with my 2016 Toyota Highlander Hybrid?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—MECMO 56217 fits 2008–2019 Toyota Highlander models including Hybrid trims, provided the vehicle has the factory pre-wired tail light port.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this 4-pin harness for trailers with electric brakes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—the 4-pin flat supports lights only. Trailers with electric brakes need a 7-pin harness or a separate brake controller wiring solution.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MECMO","offers":[{"title":"Default Title","offer_id":48083774013598,"sku":"B0B19FCZYJ","price":54.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mecmo-front-connector-and-packaging.jpg?v=1785836231","url":"https:\/\/northtrailauto.ca\/products\/mecmo-4-pin-trailer-wiring-harness-56217-for-toyota-highlander-lexus-rx-plug-and-play-4-way-flat-with-dust-cover","provider":"North Trail Auto","version":"1.0","type":"link"}