{"product_id":"smg-universal-gm-flex-fuel-sensor-wiring-harness","title":"SMG Universal GM Flex Fuel Sensor Wiring Harness","description":"\u003cp\u003e\u003cstrong\u003eHarness only. Flex fuel sensor, fuel fittings, hose, and plumbing are not included.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003eSMG Universal GM Flex Fuel Sensor Wiring Harness\u003c\/strong\u003e is designed as a direct replacement for an existing SMG Flex Fuel Kit or as a standalone wiring solution for DIY flex fuel installations, LS swaps, hot rods, race cars, and custom engine-management projects.\u003c\/p\u003e\u003cp\u003eBuilt with OEM-style sealed connectors, automotive-grade wire, machine-crimped terminals, abrasion-resistant braided loom, and a dedicated white PCM signal lead, this harness provides a clean, professional alternative to cutting, splicing, or building a harness from scratch.\u003c\/p\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned for GM applications using the newer LS3-style ignition-coil connector family\u003c\/li\u003e\n\u003cli\u003eCompatible with common LS3, L92, L99, LSA, LS7, and Gen V LT-style coil connectors\u003c\/li\u003e\n\u003cli\u003eIdeal for LS swaps, custom vehicles, race cars, hot rods, and replacement SMG harness installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNot compatible with early LS1\/LS6-style ignition-coil connectors.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore ordering, compare your ignition-coil connector to the product photos.\u003c\/strong\u003e Connector styles can vary by engine, vehicle, and prior modifications. If you are unsure, send us a clear photo of your ignition-coil connector so fitment can be verified before purchase.\u003c\/p\u003e\u003ch3\u003ePCM Lead Length\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e12-inch PCM lead\u003c\/li\u003e\n\u003cli\u003e24-inch PCM lead\u003c\/li\u003e\n\u003cli\u003e36-inch PCM lead\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhen used outside a complete SMG Flex Fuel Kit, the installer must supply the compatible flex fuel sensor, fuel-line fittings, plumbing, calibration, and vehicle-specific PCM pin connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMade in the USA by SMG.\u003c\/strong\u003e\u003c\/p\u003e","brand":"SMGspeed","offers":[{"title":"12\" PCM Lead","offer_id":54063472967999,"sku":"SMGFFKHARNESS-12","price":129.99,"currency_code":"USD","in_stock":true},{"title":"24\" PCM Lead","offer_id":54063473000767,"sku":"SMGFFKHARNESS-24","price":139.99,"currency_code":"USD","in_stock":true},{"title":"36\" PCM Lead","offer_id":54063473033535,"sku":"SMGFFKHARNESS-36","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/2041\/6831\/files\/ChatGPTImageJul9_2026_02_34_21PM_6bfeac08-a4f5-46c6-9ad0-6d6f2360bd82.png?v=1783626227","url":"https:\/\/smgspeed.com\/products\/smg-universal-gm-flex-fuel-sensor-wiring-harness","provider":"SMGspeed","version":"1.0","type":"link"}