{"product_id":"maierke-7-way-trailer-plug-7-pin-to-4-pin-trailer-adapter-7","title":"maierke 7 Way Trailer Plug 7 Pin to 4 Pin Trailer Adapter 7","description":"\u003cp\u003e\u003cstrong\u003eThe maierke 7 Way Trailer Plug adapter converts a vehicle-side 4-flat socket into both a 7-blade RV output and a 4-pin flat output, giving you simultaneous 7-pin and 4-pin trailer connections with a mounting bracket for secure towing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you need to tow different trailers or connect a trailer with greater electrical needs to a vehicle that only has a 4-flat socket, this maierke dual-output adapter provides a durable, weatherproof solution. Built with reinforced ABS, tin-plated copper terminals, and silicone seals, it is designed to protect contacts and wiring while delivering reliable lighting, brake, reverse, and auxiliary 12V circuits for a range of towing setups.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this adapter let me tow trailers that use different plugs?\u003c\/h3\u003e\n\n\u003cp\u003eThe adapter accepts a vehicle-side 4-flat input and provides both a 7-blade RV output and a 4-flat output, so you can connect trailers requiring either configuration without swapping connectors. It routes brake, turn, tail, reverse and auxiliary power to the correct pins and supports simultaneous connection of two trailer types.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConverts factory 4-flat socket into combined 7-pin and 4-pin outputs\u003c\/li\u003e\n  \u003cli\u003eMaintains lighting, brake and auxiliary circuits for compatible trailers\u003c\/li\u003e\n  \u003cli\u003eDual outputs enable two trailer connection types at once\u003c\/li\u003e\n  \u003cli\u003eExtra leads provide reverse and 12V auxiliary power where needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the maierke connector built to handle outdoor towing conditions?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the adapter uses a reinforced ABS housing, tin-plated copper terminals and silicone-sealed sockets to resist moisture and corrosion. Protective dust covers and an oil-resistant wire loom further shield connections from road grime and abrasion for longer life on the road.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSilicone seals and spring-loaded covers keep moisture out of terminals\u003c\/li\u003e\n  \u003cli\u003eTin-plated terminals and pure copper wiring improve conductivity and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eDust caps and black protective conduit reduce wear from elements and oils\u003c\/li\u003e\n  \u003cli\u003eABS plastic body resists rust and impacts for durable outdoor use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what comes in the kit?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward and intended for do-it-yourself setups: the adapter arrives pre-assembled with a mounting bracket and hardware, and it snaps securely into standard 4-flat sockets. No special tools or custom wiring are required for most installations, and the universal mounting hole pattern fits common vehicle brackets.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-assembled wiring harness and connectors for quick fit-up\u003c\/li\u003e\n  \u003cli\u003eIncludes mounting bracket, screws and nuts for secure attachment\u003c\/li\u003e\n  \u003cli\u003eUniversal mounting holes match common trailer\/vehicle brackets\u003c\/li\u003e\n  \u003cli\u003eConnectors snap into place without wobble or loosened contacts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this adapter support trailer functions like brakes and reverse lights?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the adapter preserves the key circuits used by trailers, including brake lights, turn signals, taillights, reverse lights, and a 12V auxiliary output when supported by the vehicle source. Extra wiring leads ensure those functions are routed correctly to the 7-pin outlet while retaining the 4-flat output for simpler trailers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBrake and turn signal circuits routed to compatible pins\u003c\/li\u003e\n  \u003cli\u003eReverse light lead included for trailers that require it\u003c\/li\u003e\n  \u003cli\u003e12V auxiliary power line for small accessories or battery charging\u003c\/li\u003e\n  \u003cli\u003eMaintains both 4-pin and 7-pin function simultaneously\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The maierke 7 Way Trailer Plug adapter is for RV owners, truck drivers, and homeowners who tow multiple trailer types and need a single, rugged connector to bridge a vehicle-side 4-flat socket to trailers with 7-blade or 4-flat plugs. It’s ideal for anyone seeking a weatherproof, easy-to-install adapter that preserves braking, lighting and auxiliary circuits without modifying the vehicle’s factory wiring.\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: Can I use this adapter on any vehicle with a 4-flat socket?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it’s designed to plug into standard 4-flat vehicle sockets and provide both 7-pin and 4-pin outputs without modifying the vehicle wiring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the adapter keep moisture out of the terminals?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — silicone-sealed sockets, spring-loaded covers and dust caps protect terminals from moisture and road debris.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"maierke","offers":[{"title":"Default Title","offer_id":48087688675486,"sku":"B0F2HM9HGF","price":37.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/maierke-front-view-assembled-adapter.jpg?v=1785928822","url":"https:\/\/northtrailauto.ca\/products\/maierke-7-way-trailer-plug-7-pin-to-4-pin-trailer-adapter-7","provider":"North Trail Auto","version":"1.0","type":"link"}