{"product_id":"curt-vehicle-side-4-pin-trailer-wiring-harness-grand-highlander-fit-plug-in-oem-style-4-way-flat-no-splicing","title":"CURT vehicle-side 4-pin trailer wiring harness — Grand Highlander fit, plug-in OEM-style 4-way flat, no splicing","description":"\u003cp\u003e\u003cstrong\u003eCURT 56524 is a vehicle‑side, plug‑in 4‑pin trailer wiring harness engineered to give select Toyota, Grand Highlander and Lexus TX models a clean, OEM‑style 4‑way flat trailer connection without cutting or splicing vehicle wiring.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need a reliable, factory‑like trailer connector for towing small to medium trailers, this CURT custom wiring connector plugs into an existing OEM socket and provides a durable 4‑way flat output for tail lights, brake lights and turn signals. It’s built specifically to fit certain years and trims of the Toyota Highlander, Grand Highlander and Lexus TX series, so installation is straightforward and reversible. The harness includes the necessary mounting hardware and a dust cover to protect the socket when not in use.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness simplify installation?\u003c\/h3\u003e\n\u003cp\u003eThe CURT 56524 uses a vehicle‑specific OEM‑compatible plug so you don’t need to splice, cut or solder into the factory wiring. It’s essentially plug‑and‑play: line up the connector, insert into the factory socket, and secure with the supplied hardware. That reduces installation time and preserves your vehicle’s original wiring integrity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect OEM‑style plug fits the vehicle’s factory socket\u003c\/li\u003e\n  \u003cli\u003eNo splicing or modifications to factory wiring required\u003c\/li\u003e\n  \u003cli\u003eIncludes mounting hardware for a tidy, secure install\u003c\/li\u003e\n  \u003cli\u003eDust cover protects the connector when unused\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat trailer lighting functions does the 4‑way flat support?\u003c\/h3\u003e\n\u003cp\u003eThe 4‑way flat output provides standard trailer lighting circuits so your trailer’s tail lights, brake lights and turn signals operate in sync with the tow vehicle. This harness converts the vehicle signals into the universal 4‑pin format used by most small trailers and utility equipment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLeft and right turn signals pass through to the trailer\u003c\/li\u003e\n  \u003cli\u003eBrake lights synchronized with vehicle brake lamp output\u003c\/li\u003e\n  \u003cli\u003eRunning\/tail lights powered for night and daytime visibility\u003c\/li\u003e\n  \u003cli\u003eCompatible with most 4‑way flat trailer plugs and adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat durability and compatibility features ensure reliable performance?\u003c\/h3\u003e\n\u003cp\u003eCURT designs this custom connector with SMT circuitry and industry‑grade components to handle automotive environments. The vehicle‑specific design eliminates loose wiring, and the included dust cover helps prevent corrosion and debris buildup when the socket is not in use. Always check the application list to confirm vehicle compatibility before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSurface‑mount (SMT) circuitry for stable electrical performance\u003c\/li\u003e\n  \u003cli\u003eSealed connector housing and dust cover for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eFactory‑fit shape and locking mechanism for a secure connection\u003c\/li\u003e\n  \u003cli\u003eTested by CURT for consistent, dependable operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this harness work with my specific Highlander or Lexus model?\u003c\/h3\u003e\n\u003cp\u003eThe 56524 is made for select years and trims of Toyota Highlander, Grand Highlander and Lexus TX models. Because vehicle wiring and sockets vary by production year and trim, verify compatibility using the CURT application guide or your vehicle’s fitment information before ordering. Installing an incompatible connector may prevent a proper fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for specific Toyota Highlander and Grand Highlander years and Lexus TX trims\u003c\/li\u003e\n  \u003cli\u003eReference CURT’s application chart or the product listing fitment tool\u003c\/li\u003e\n  \u003cli\u003eProfessional installers can confirm socket type if uncertain\u003c\/li\u003e\n  \u003cli\u003eReturn or exchange if fitment guidance indicates mismatch\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers who tow small trailers, utility carts, or recreational equipment from compatible Toyota and Lexus vehicles and want a clean, reversible, OEM‑style trailer wiring connection. It’s ideal for owners who prefer a plug‑and‑play solution that preserves factory wiring, reduces installation time, and provides a protected 4‑way flat socket ready for everyday towing use.\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: Do I need to cut or splice vehicle wires to install this harness?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The CURT 56524 is a plug‑in, vehicle‑specific connector that installs without cutting or splicing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will the 4‑way output power trailer brake lights and turn signals?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 4‑way flat provides tail lights, brake lights and turn signals for compatible trailers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CURT","offers":[{"title":"Default Title","offer_id":48081587568798,"sku":"B0D4CK7RML","price":148.66,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/curt-56524-front-connector-view.jpg?v=1785808725","url":"https:\/\/northtrailauto.ca\/products\/curt-vehicle-side-4-pin-trailer-wiring-harness-grand-highlander-fit-plug-in-oem-style-4-way-flat-no-splicing","provider":"North Trail Auto","version":"1.0","type":"link"}