{"id":893,"date":"2026-08-23T10:18:16","date_gmt":"2026-08-23T10:18:16","guid":{"rendered":"https:\/\/metareported.com\/product\/universal-4-pin-trailer-wiring-harness\/"},"modified":"2026-08-23T12:30:57","modified_gmt":"2026-08-23T12:30:57","slug":"universal-4-pin-trailer-wiring-harness","status":"publish","type":"product","link":"https:\/\/metareported.com\/zh\/product\/universal-4-pin-trailer-wiring-harness\/","title":{"rendered":"Universal 4-Pin Trailer Wiring Harness"},"content":{"rendered":"<h2>Product Details<\/h2>\n<p>A universal 4-pin flat trailer wiring harness for basic trailer lighting connections. The four-wire configuration is commonly used for left turn\/brake, right turn\/brake, tail\/running lights and ground.<\/p>\n<h3>Key Features<\/h3>\n<ul>\n<li>4-pin flat trailer connector<\/li>\n<li>Color-coded four-wire harness<\/li>\n<li>Suitable for common light-duty trailer lighting circuits<\/li>\n<li>Flexible wiring lead<\/li>\n<\/ul>\n<h3>Specifications<\/h3>\n<table>\n<tbody>\n<tr>\n<th>Connector<\/th>\n<td>4-Pin Flat<\/td>\n<\/tr>\n<tr>\n<th>Circuits<\/th>\n<td>Ground, Tail\/Running, Left Turn\/Brake, Right Turn\/Brake<\/td>\n<\/tr>\n<tr>\n<th>Fitment<\/th>\n<td>Universal basic trailer-lighting applications<\/td>\n<\/tr>\n<tr>\n<th>Product Type<\/th>\n<td>Trailer Wiring Harness<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Installation<\/h3>\n<p>Wire the harness according to the vehicle and trailer lighting circuit, then secure all connections against moisture and abrasion. Test every trailer-lighting function before towing.<\/p>\n<h3>Package Includes<\/h3>\n<p>1 \u00d7 4-Pin Trailer Wiring Harness.<\/p>\n<h3>Important Notes<\/h3>\n<p>This is a basic universal harness, not a vehicle-specific plug-and-play converter. Some vehicles require a powered converter module or dedicated vehicle harness.<\/p>","protected":false},"excerpt":{"rendered":"<p><strong>Fitment:<\/strong> Universal basic trailer-lighting applications<\/p>\n<ul>\n<li><strong>Connector:<\/strong> 4-Pin Flat<\/li>\n<li><strong>Circuits:<\/strong> Ground \/ Tail \/ Left \/ Right<\/li>\n<li><strong>Type:<\/strong> Trailer Wiring Harness<\/li>\n<\/ul>","protected":false},"featured_media":878,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_focuskw":"","rank_math_title":"","rank_math_description":"","rank_math_focus_keyword":"","_aioseop_title":"","_aioseop_description":""},"product_brand":[],"product_cat":[205,111],"product_tag":[50],"class_list":["post-893","product","type-product","status-publish","has-post-thumbnail","product_cat-trailer-wiring-harnesses","product_cat-wiring-harnesses-adapters","product_tag-new-arrivals","desktop-align-left","tablet-align-left","mobile-align-left","ast-product-gallery-layout-vertical-slider","ast-product-gallery-with-no-image","ast-product-tabs-layout-horizontal","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/product\/893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/comments?post=893"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/media\/878"}],"wp:attachment":[{"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/media?parent=893"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/product_brand?post=893"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/product_cat?post=893"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/metareported.com\/zh\/wp-json\/wp\/v2\/product_tag?post=893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}