{"product_id":"chevrolet-buick-4-pin-hybrid-generator-alternator-connector-oem-12124898-v2","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\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 — combining low-current signal pins (1.5mm) for voltage regulation and diagnostic signals with higher-current excitation pins (2.8mm) for the field winding supply, all in a single black nylon waterproof housing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eOn GM vehicles with smart charging systems (variable voltage regulation), the alternator is controlled by the ECM via a PWM signal on the 1.5mm signal pins. A failed signal pin causes the alternator to default to a fixed output voltage, reducing fuel economy and potentially overcharging the battery. A failed 2.8mm excitation pin causes complete charging system failure — battery warning light, voltage drop, and eventual stall.\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\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eSeries\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\u003c\/td\u003e\n\u003ctd\u003e2.8mm\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\u003c\/td\u003e\n\u003ctd\u003e2.8mm\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\u003c\/td\u003e\n\u003ctd\u003e1.5mm\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\u003c\/td\u003e\n\u003ctd\u003e1.5mm\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 GT \/ 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\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My Chevrolet Cruze battery warning light is on — could it be the alternator 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\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":47838215438581,"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":47838215471349,"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_f3e2cd49-a581-4f50-a403-2ee17f3970e8.webp?v=1773727877","url":"https:\/\/www.csldmcml.com\/products\/chevrolet-buick-4-pin-hybrid-generator-alternator-connector-oem-12124898-v2","provider":"Cable Parts Online","version":"1.0","type":"link"}