{"product_id":"chevrolet-buick-4-pin-hybrid-generator-alternator-connector-oem-12124898","title":"Chevrolet \/ Buick 4-Pin 1.5\/2.8mm Hybrid Generator (Alternator) Waterproof Connector – OEM 12124898","description":"\u003ch2\u003eChevrolet \/ Buick 4-Pin 1.5\/2.8mm Hybrid Generator (Alternator) Waterproof Connector – OEM 12124898\u003c\/h2\u003e\n\u003cp\u003eDirect OEM-specification replacement for the Delphi 4-pin hybrid waterproof wire harness connector used on generators (alternators) across Chevrolet and Buick GM platforms. Cross-references Delphi \/ GM OEM part number \u003cstrong\u003e12124898\u003c\/strong\u003e. Uses a \u003cstrong\u003e1.5\/2.8mm hybrid contact series\u003c\/strong\u003e — a mixed-pitch connector combining low-current signal pins (1.5mm, for voltage regulation and diagnostic signals) and higher-current excitation pins (2.8mm, for field winding supply) in a single black nylon housing with waterproof sealing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eThe 4-pin generator connector is located on the alternator body in the engine bay, exposed to heat, vibration, and moisture. A failed connector causes \u003cstrong\u003echarging system failure\u003c\/strong\u003e — the battery warning light illuminates, the battery voltage drops below 12V, and the vehicle eventually stalls as the battery is discharged. On GM vehicles with smart charging systems (variable voltage regulation), a failed signal pin on the 4-pin connector causes the alternator to default to a fixed output voltage, reducing fuel economy and potentially overcharging the battery.\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\u003e12124898\u003c\/td\u003e\n\u003ctd\u003eDelphi 4-pin hybrid generator connector (Chevrolet \/ Buick)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e4-Pin Circuit Function (Generator \/ Alternator)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eFailure Symptom if Open\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 (2.8mm)\u003c\/td\u003e\n\u003ctd\u003eField winding excitation supply (12V)\u003c\/td\u003e\n\u003ctd\u003eAlternator not charging, battery warning light\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 (2.8mm)\u003c\/td\u003e\n\u003ctd\u003eSense \/ output voltage feedback\u003c\/td\u003e\n\u003ctd\u003eVoltage regulation fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 (1.5mm)\u003c\/td\u003e\n\u003ctd\u003eECM voltage regulation signal (PWM)\u003c\/td\u003e\n\u003ctd\u003eFixed output voltage, reduced fuel economy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 (1.5mm)\u003c\/td\u003e\n\u003ctd\u003eCharge indicator \/ diagnostic signal\u003c\/td\u003e\n\u003ctd\u003eBattery warning light, no diagnostic data\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\u003e4-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Series\u003c\/td\u003e\n\u003ctd\u003e1.5\/2.8mm hybrid pitch (Delphi series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNylon, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing\u003c\/td\u003e\n\u003ctd\u003eWaterproof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e12124898\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eGenerator (alternator), smart charging system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eChevrolet Cruze \/ Malibu \/ Equinox \/ Trax; Buick Excelle \/ Regal \/ LaCrosse\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 Cruze \/ Malibu \/ Equinox \/ Trax\u003c\/strong\u003e – Alternator harness connector (Ecotec engine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuick Excelle GT \/ Regal \/ LaCrosse\u003c\/strong\u003e – Generator connector (1.5T \/ 2.0T engine)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My Chevrolet Cruze battery warning light is on and the alternator is not charging — could it be the connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A corroded or open 4-pin generator connector is a common cause of charging system failure on GM Ecotec engines. Test the alternator output directly before replacing it — if the alternator produces voltage when the connector is bypassed, the fault is in the connector (OEM 12124898).\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","brand":"Cable Parts Online","offers":[{"title":"Plug with wires \/ 1 Pcs","offer_id":47838187651317,"sku":"14:200004890#Plug with wires;200001249:202408827#1 Pcs","price":30.36,"currency_code":"USD","in_stock":true},{"title":"Plug with Pins \/ 1 Pcs","offer_id":47838187684085,"sku":"14:200004889#Plug with Pins;200001249:202408827#1 Pcs","price":12.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S31a15a348f4a43bf966cec17fb59773fz.webp?v=1773727594","url":"https:\/\/www.csldmcml.com\/products\/chevrolet-buick-4-pin-hybrid-generator-alternator-connector-oem-12124898","provider":"Cable Parts Online","version":"1.0","type":"link"}