{"product_id":"5-pin-6-3mm-relay-wiring-harness-repair-connector-oem-cy7051-6-3-21","title":"5-Pin 6.3mm Relay \/ Wiring Harness Repair Connector – OEM CY7051-6.3-21 | Female Plug","description":"\u003ch2\u003e5-Pin 6.3mm Relay \/ Wiring Harness Repair Connector – OEM CY7051-6.3-21 | Female Plug\u003c\/h2\u003e\n\n\u003cp\u003eDirect OEM-specification replacement for the 5-pin 6.3mm female wire harness connector used on automotive relay sockets and wiring harness repair applications across multiple vehicle platforms. Cross-references OEM part number \u003cstrong\u003eCY7051-6.3-21\u003c\/strong\u003e. Uses the \u003cstrong\u003e6.3mm contact series\u003c\/strong\u003e in female housing — the 6.3mm series is the standard contact pitch for automotive relay sockets, fuse box connectors, and high-current body harness junctions where the connector must carry relay coil and contact currents simultaneously.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eThe 5-pin 6.3mm relay connector is used on relay sockets throughout the vehicle — in the engine bay fuse box, interior fuse box, and body harness relay mounts. A failed relay connector causes the relay to lose contact with the harness, resulting in the loss of the circuit controlled by that relay (fuel pump, cooling fan, horn, starter, A\/C compressor, etc.). The 6.3mm terminal is susceptible to fretting corrosion under vibration, which increases contact resistance and causes intermittent relay operation before complete failure.\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\u003eCY7051-6.3-21\u003c\/td\u003e\n\u003ctd\u003e5-pin 6.3mm female relay \/ harness repair connector (universal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e5-Pin Circuit Function (Relay Socket)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eISO 7588 Terminal\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e85\u003c\/td\u003e\n\u003ctd\u003eRelay coil ground (ECM or switch-controlled)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e86\u003c\/td\u003e\n\u003ctd\u003eRelay coil power supply (12V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003eCommon contact (battery or fused supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e87\u003c\/td\u003e\n\u003ctd\u003eNormally open contact (load circuit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e87a\u003c\/td\u003e\n\u003ctd\u003eNormally closed contact (alternate load circuit)\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\u003e5-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Series\u003c\/td\u003e\n\u003ctd\u003e6.3mm pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGender\u003c\/td\u003e\n\u003ctd\u003eFemale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing\u003c\/td\u003e\n\u003ctd\u003eNon-waterproof (interior \/ fuse box application)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003eCY7051-6.3-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eRelay socket, fuse box connector, wiring harness repair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eUniversal — fits standard ISO 7588 5-pin relay sockets across all vehicle makes\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: What relay types fit this socket?\u003c\/strong\u003e\u003cbr\u003eA: This socket fits standard ISO 7588 5-pin automotive relays (mini relay format) used across all vehicle makes. Confirm the relay pin layout matches the ISO 85\/86\/30\/87\/87a configuration before ordering.\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":"Follow me cheaper \/ 1set female","offer_id":47838232051957,"sku":"14:200004889#Follow me cheaper;200001249:202408827#1set female","price":12.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/H7a748941189c480fa7a50e5bc62b10cac.webp?v=1773728040","url":"https:\/\/www.csldmcml.com\/products\/5-pin-6-3mm-relay-wiring-harness-repair-connector-oem-cy7051-6-3-21","provider":"Cable Parts Online","version":"1.0","type":"link"}