{"product_id":"gm-12-pin-headlight-harness-connector-oem-15326915","title":"GM 12-Pin Headlight Wire Harness Connector – OEM 15326915 \/ 15326910 Direct Fit","description":"\u003ch2\u003eGM 12-Pin Headlight Wire Harness Connector – OEM 15326915 \/ 15326910 Direct Fit\u003c\/h2\u003e\n\u003cp\u003eDirect OEM-specification replacement for the GM 12-pin headlight wire harness connector. Cross-references General Motors part numbers \u003cstrong\u003e15326915\u003c\/strong\u003e and \u003cstrong\u003e15326910\u003c\/strong\u003e. Used in headlight assemblies across Chevrolet, GMC, Buick, and Cadillac platforms where multiple lighting circuits — low beam, high beam, DRL, turn signal, position light, and AFS — are consolidated into a single 12-pin connector.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eGM 12-pin headlight connectors are a known failure point on high-mileage vehicles. The large pin count means multiple circuits share one housing, and a single corroded or damaged pin can cause an isolated lighting fault that is difficult to diagnose without knowing the pin layout. Common failure modes include: locking tab fracture from repeated bulb replacement access, terminal corrosion from moisture ingress through the headlight housing seal, and wire chafing at the connector strain relief. Replacing the connector assembly is the correct repair before condemning the headlight module or ballast.\u003c\/p\u003e\n\n\u003ch3\u003eOEM Part Number Cross-Reference\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Number\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15326915\u003c\/td\u003e\n\u003ctd\u003ePrimary 12-pin headlight harness connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15326910\u003c\/td\u003e\n\u003ctd\u003eAlternate \/ superseded part number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e12-Pin Circuit Function (Typical GM Layout)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin Group\u003c\/th\u003e\n\u003cth\u003eTypical Function\u003c\/th\u003e\n\u003cth\u003eFailure Symptom if Open\/Corroded\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePins 1–2\u003c\/td\u003e\n\u003ctd\u003eLow beam power and ground\u003c\/td\u003e\n\u003ctd\u003eLow beam not illuminating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePins 3–4\u003c\/td\u003e\n\u003ctd\u003eHigh beam power and ground\u003c\/td\u003e\n\u003ctd\u003eHigh beam not illuminating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePins 5–6\u003c\/td\u003e\n\u003ctd\u003eDRL power and ground\u003c\/td\u003e\n\u003ctd\u003eDRL fault, B2590 or B2591 DTC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePins 7–8\u003c\/td\u003e\n\u003ctd\u003eTurn signal power and ground\u003c\/td\u003e\n\u003ctd\u003eTurn signal not flashing, hyper-flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePins 9–10\u003c\/td\u003e\n\u003ctd\u003ePosition \/ parking light\u003c\/td\u003e\n\u003ctd\u003ePosition light out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePins 11–12\u003c\/td\u003e\n\u003ctd\u003eAFS motor control or ambient light sensor\u003c\/td\u003e\n\u003ctd\u003eAFS fault, headlight not levelling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e12-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Numbers\u003c\/td\u003e\n\u003ctd\u003e15326915 \/ 15326910\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNylon PA66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHeadlight assembly harness, multi-circuit lighting connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003eChevrolet, GMC, Buick, Cadillac (GM platform)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Included\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChevrolet Silverado \/ Tahoe \/ Suburban\u003c\/strong\u003e – Headlight assembly harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChevrolet Malibu \/ Impala \/ Cruze\u003c\/strong\u003e – Front lighting harness connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMC Sierra \/ Yukon \/ Terrain\u003c\/strong\u003e – Headlight and DRL harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuick LaCrosse \/ Enclave \/ Verano\u003c\/strong\u003e – Headlamp connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCadillac CTS \/ SRX \/ Escalade\u003c\/strong\u003e – Shared GM headlight harness architecture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My Chevrolet DRL warning light is on but the headlights work — is it the connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A DRL fault with functioning low\/high beams is a classic symptom of corrosion on the DRL circuit pins (5–6) in the 12-pin headlight connector. GM BCM logs this as \u003cstrong\u003eB2590\u003c\/strong\u003e (DRL relay circuit open) or \u003cstrong\u003eB2591\u003c\/strong\u003e (DRL relay circuit short). Inspect and clean the connector before replacing the DRL relay or BCM.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What GM fault codes does a failed headlight connector cause?\u003c\/strong\u003e\u003cbr\u003eA: Common DTCs include \u003cstrong\u003eB0080\u003c\/strong\u003e (headlamp circuit fault), \u003cstrong\u003eB2590\/B2591\u003c\/strong\u003e (DRL circuit), \u003cstrong\u003eB1325\u003c\/strong\u003e (turn signal circuit), and \u003cstrong\u003eB2477\u003c\/strong\u003e (module configuration failure). The specific code depends on which pin circuit has failed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I replace just the connector without replacing the entire headlight harness?\u003c\/strong\u003e\u003cbr\u003eA: Yes. This connector is designed for splice-in repair. Cut the damaged connector from the existing harness, strip the wires, and crimp or solder the new connector terminals onto the existing wires. No harness replacement required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are terminals included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, terminals are included with all variants.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this connector compatible with HID \/ xenon headlight assemblies?\u003c\/strong\u003e\u003cbr\u003eA: The 12-pin connector housing is compatible with both halogen and HID headlight assemblies that use the GM 15326915 \/ 15326910 connector. The HID ballast connector is a separate component — verify your headlight assembly type before ordering.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"Male","offer_id":47831701586165,"sku":"14:202642826#Male","price":19.75,"currency_code":"USD","in_stock":true},{"title":"Male 15CM","offer_id":47831701651701,"sku":"14:200004890#Male 15CM","price":64.75,"currency_code":"USD","in_stock":true},{"title":"Female","offer_id":47831701684469,"sku":"14:200004889#Female","price":21.25,"currency_code":"USD","in_stock":true},{"title":"Female 15CM","offer_id":47831701618933,"sku":"14:200004891#Female 15CM","price":66.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S878ac398fed0438bad97c0800f3e8dc48.webp?v=1773633457","url":"https:\/\/www.csldmcml.com\/products\/gm-12-pin-headlight-harness-connector-oem-15326915","provider":"Cable Parts Online","version":"1.0","type":"link"}