{"product_id":"honda-dio-110cc-3-pin-ac-switch-connector-cy000312-1-5f","title":"Honda Dio 110cc 3-Pin AC Assembly \/ Motorcycle Switch Wire Harness Connector – OEM CY000312-1.5F","description":"\u003ch2\u003eHonda Dio 110cc 3-Pin AC Assembly \/ Motorcycle Switch Wire Harness Connector – OEM CY000312-1.5F\u003c\/h2\u003e\n\u003cp\u003eDirect OEM-specification replacement for the 3-pin wire harness connector used on the AC generator (alternator) assembly and handlebar switch harness of the Honda Dio 110cc scooter. Cross-references Honda OEM part number \u003cstrong\u003eCY000312-1.5F\u003c\/strong\u003e. Uses the \u003cstrong\u003e1.5mm contact series\u003c\/strong\u003e in white nylon and rubber housing — designed for the vibration and moisture environment of a scooter engine bay and handlebar assembly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eThe Honda Dio 110cc AC connector is a common failure point on high-mileage scooters. The 3-pin housing is located near the engine, exposed to heat, vibration, and fuel\/oil contamination. Connector failure causes loss of AC power to the lighting circuit or ignition system, producing symptoms such as dim or flickering headlights, no charging, or intermittent ignition cut-out. These faults are frequently misdiagnosed as a failed CDI unit or stator coil. Replacing the connector is the correct first step when the stator output voltage tests within specification.\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\u003eCY000312-1.5F\u003c\/td\u003e\n\u003ctd\u003eHonda Dio 110cc AC assembly \/ switch harness connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e3-Pin Circuit Function (Honda Dio AC Layout)\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\u003c\/td\u003e\n\u003ctd\u003eAC output Phase 1 (lighting coil)\u003c\/td\u003e\n\u003ctd\u003eHeadlight dim or off, no AC lighting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eAC output Phase 2 (ignition coil)\u003c\/td\u003e\n\u003ctd\u003eIntermittent ignition cut-out, no start\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eGround \/ neutral\u003c\/td\u003e\n\u003ctd\u003eErratic AC output, charging fault\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\u003e3-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Series\u003c\/td\u003e\n\u003ctd\u003e1.5mm pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNylon and rubber (vibration-resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Colour\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003eCY000312-1.5F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eAC generator harness, handlebar switch harness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eHonda Dio 110cc scooter\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\u003eHonda Dio 110cc\u003c\/strong\u003e – AC assembly harness connector and handlebar switch plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda Dio AF series\u003c\/strong\u003e – Shared 1.5mm 3-pin connector platform (verify OEM number)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda scooter platforms\u003c\/strong\u003e – 110cc class AC generator and switch harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My Honda Dio headlight is dim and flickering — could it be the AC connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Dim or flickering headlights on the Honda Dio 110cc are a classic symptom of a corroded or open AC lighting coil pin (Pin 1) in the 3-pin AC connector. Test the stator AC output voltage first — if it is within specification (typically 12–14V AC at idle), the fault is in the connector or wiring, not the stator.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can a failed AC connector cause a no-start condition?\u003c\/strong\u003e\u003cbr\u003eA: Yes. If Pin 2 (ignition coil AC feed) is open or corroded, the CDI unit loses its AC power supply and cannot generate the ignition spark. This produces a no-start condition that is frequently misdiagnosed as a failed CDI or spark plug. Inspect the 3-pin AC connector before replacing the CDI unit.\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":"1 Pcs \/ Plug with Pin","offer_id":47838085611765,"sku":"14:350686#Plug with Pin;380:202835807#1 Pcs","price":3.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S5b2847ee6ef042a999f842fb9e65c340Q.webp?v=1773726600","url":"https:\/\/www.csldmcml.com\/products\/honda-dio-110cc-3-pin-ac-switch-connector-cy000312-1-5f","provider":"Cable Parts Online","version":"1.0","type":"link"}