{"product_id":"18-pin-automotive-waterproof-connector-rs4-j18zy-ah-b-wire-harness-oem","title":"18-Pin Automotive Waterproof Connector – RS4-J18ZY-AH-B, Plastic Wire Harness Connector for Automotive OEM Wiring","description":"\u003ch2\u003e18-Pin Automotive Waterproof Connector – RS4-J18ZY-AH-B, Plastic Wire Harness Connector\u003c\/h2\u003e\n\n\u003cp\u003eRS4-J18ZY-AH-B is an 18-pin waterproof automotive connector used in OEM vehicle wiring harnesses. The RS4 prefix and alphanumeric suffix indicate a specific connector series and variant — the “18” in the part number confirms the 18-pin configuration. 18-pin connectors are used for complex sub-system connections requiring more circuits than standard 12-pin connectors but fewer than 24-pin or 31-pin connectors: instrument cluster connections, body control module sub-connectors, and multi-function switch assemblies.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RS4-J18ZY-AH-B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Count:\u003c\/strong\u003e 18 pins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP Rating:\u003c\/strong\u003e IP67\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHousing Material:\u003c\/strong\u003e PA66 nylon, flame retardant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -40°C to +125°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Automotive OEM wiring harness connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e18-Pin Connector — Common Automotive Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstrument clusters:\u003c\/strong\u003e 18-pin connectors carry gauge, warning light, CAN bus, and power circuits for instrument cluster connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody control modules:\u003c\/strong\u003e BCM sub-connector for lighting, door, and body circuit control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-function switches:\u003c\/strong\u003e Steering column switch assemblies with multiple circuit functions (turn signal, wiper, cruise control, horn)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHVAC controls:\u003c\/strong\u003e Climate control module connections with temperature, fan, and mode circuit connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e Automatic transmission valve body connections with multiple solenoid and sensor circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eHow do I identify the correct replacement for RS4-J18ZY-AH-B?\u003c\/h4\u003e\n\u003cp\u003eThe part number RS4-J18ZY-AH-B is typically molded into the connector housing. Cross-reference with the vehicle’s parts catalog or wiring diagram to verify it is the correct replacement. Verify: pin count (18), connector gender (male plug or female receptacle), locking mechanism type, and mounting configuration. The “AH-B” suffix may indicate a specific color, locking variant, or housing material — verify against the original connector.\u003c\/p\u003e\n\n\u003ch4\u003eWhat contacts are compatible with RS4-J18ZY-AH-B?\u003c\/h4\u003e\n\u003cp\u003eContact compatibility depends on the specific connector series that RS4-J18ZY-AH-B belongs to. Identify the contact size by measuring the contact cavity diameter in the housing, or cross-reference the part number with the manufacturer’s catalog. Order the correct contact size and type for your application.\u003c\/p\u003e\n\n\u003ch4\u003eCan I repair individual terminals in an 18-pin connector?\u003c\/h4\u003e\n\u003cp\u003eYes. Individual terminal replacement is the most cost-effective repair for 18-pin connectors with 1–3 damaged terminals. Use the appropriate extraction tool for the contact size, remove the damaged terminal, crimp a new terminal onto the wire, and reinsert into the housing until the locking lance clicks. Verify seating with a pull-test before reassembling.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstrument clusters:\u003c\/strong\u003e Cluster connector repair for gauge and warning light circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody control:\u003c\/strong\u003e BCM sub-connector terminal replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-function switches:\u003c\/strong\u003e Steering column switch connector repair\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHVAC:\u003c\/strong\u003e Climate control module connector replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive repair:\u003c\/strong\u003e OEM connector replacement for damaged 18-pin harness connectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003e1 piece — RS4-J18ZY-AH-B 18-pin automotive waterproof connector (housing as specified). Contacts and wire seals ordered separately if not included.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"RS4-J18ZY-AH-B \/ 50pcs","offer_id":47850565107957,"sku":"14:200004889#RS4-J18ZY-AH-B;200001249:202408831#50pcs","price":3112.0,"currency_code":"USD","in_stock":true},{"title":"RS4-J18ZY-AH-B \/ 20pcs","offer_id":47850565140725,"sku":"14:200004889#RS4-J18ZY-AH-B;200001249:202408830#20pcs","price":1244.8,"currency_code":"USD","in_stock":true},{"title":"RS4-J18ZY-AH-B \/ 10pcs","offer_id":47850565173493,"sku":"14:200004889#RS4-J18ZY-AH-B;200001249:202408829#10pcs","price":622.4,"currency_code":"USD","in_stock":true},{"title":"RS4-J18ZY-AH-B \/ 5pcs","offer_id":47850565206261,"sku":"14:200004889#RS4-J18ZY-AH-B;200001249:202408828#5pcs","price":311.2,"currency_code":"USD","in_stock":true},{"title":"RS4-J18ZY-AH-B \/ 2pcs","offer_id":47850565239029,"sku":"14:200004889#RS4-J18ZY-AH-B;200001249:202408827#2pcs","price":124.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S5150bca6fe1545bfb8589f4101f7d2a1k.webp?v=1773896269","url":"https:\/\/www.csldmcml.com\/products\/18-pin-automotive-waterproof-connector-rs4-j18zy-ah-b-wire-harness-oem","provider":"Cable Parts Online","version":"1.0","type":"link"}