{"product_id":"30-pin-automotive-waterproof-connector-13974994-heavy-duty-wire-harness-truck","title":"30-Pin Automotive Waterproof Connector – 13974994, Heavy-Duty Plastic Wire Harness Connector for Truck \u0026 Industrial Vehicle","description":"\u003ch2\u003e30-Pin Automotive Waterproof Connector – 13974994, Heavy-Duty Plastic Wire Harness Connector\u003c\/h2\u003e\n\n\u003cp\u003ePart number 13974994 is a 30-pin heavy-duty waterproof automotive connector used in truck, agricultural, and industrial vehicle wiring harnesses. The 30-pin configuration provides sufficient circuits for complex sub-system connections — instrument clusters, body control modules, cab-to-chassis interfaces, and ECM harness connections — while remaining more compact than 46-pin or 62-pin connectors. IP67 waterproof construction ensures reliable operation in underbody and exterior mounting locations on commercial vehicles.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 13974994\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Count:\u003c\/strong\u003e 30 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 Glass-filled nylon (PA66-GF), 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 Truck, agricultural, and industrial vehicle OEM wiring harnesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e30-Pin Connector — Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstrument clusters:\u003c\/strong\u003e 30-pin connectors are standard for truck instrument cluster connections carrying gauge, warning light, and CAN bus circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody control modules:\u003c\/strong\u003e BCM connections for lighting, door, and body circuit control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCab-to-chassis:\u003c\/strong\u003e Sub-harness connections between cab and chassis electrical systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission control:\u003c\/strong\u003e TCM harness connections on automatic and automated manual transmissions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAgricultural ECM:\u003c\/strong\u003e Engine control module connections on agricultural diesel engines\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 13974994?\u003c\/h4\u003e\n\u003cp\u003eCross-reference 13974994 with the vehicle’s parts catalog or wiring diagram. This 8-digit format is consistent with Volvo, Scania, and other European truck OEM part numbering systems. Verify the pin count (30), connector gender, locking mechanism, and mounting configuration against the original connector. If the part number is not visible, measure the connector dimensions and pin count for cross-referencing with the manufacturer’s catalog.\u003c\/p\u003e\n\n\u003ch4\u003eCan I repair individual terminals without replacing the entire connector?\u003c\/h4\u003e\n\u003cp\u003eYes. Individual terminal replacement is the preferred repair method — replacing all 30 terminals is significantly more labor-intensive than replacing 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.\u003c\/p\u003e\n\n\u003ch4\u003eWhat causes waterproof connector failure in commercial vehicles?\u003c\/h4\u003e\n\u003cp\u003eCommon failure modes: (1) Wire seal degradation — the individual wire seals around each conductor harden and crack over time, allowing water ingress. Replace wire seals when replacing terminals. (2) Housing cracking from UV exposure and thermal cycling — replace the entire housing if cracked. (3) Terminal corrosion from water ingress through degraded seals — clean corroded terminals with electrical contact cleaner and apply dielectric grease before reassembly. (4) Terminal push-back from improper probe testing — always use a back-probe adapter, never insert a test probe into the connector face.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommercial trucks:\u003c\/strong\u003e Instrument cluster, BCM, and cab-to-chassis harness connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAgricultural equipment:\u003c\/strong\u003e ECM and implement harness connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction equipment:\u003c\/strong\u003e Control harness connections on heavy machinery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBus \u0026amp; coach:\u003c\/strong\u003e Body control and lighting harness connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003e1 piece — 30-pin automotive waterproof connector 13974994 (housing as specified). Contacts and wire seals ordered separately if not included.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"13974994 \/ with  terminals \/ 2pcs","offer_id":47850570154229,"sku":"14:200004889#13974994;200001249:202408827#2pcs;200497261:203372044#with  terminals","price":299.36,"currency_code":"USD","in_stock":true},{"title":"13974994 \/ with  terminals \/ 5pcs","offer_id":47850570186997,"sku":"14:200004889#13974994;200001249:202408828#5pcs;200497261:203372044#with  terminals","price":748.4,"currency_code":"USD","in_stock":true},{"title":"13974994 \/ with  terminals \/ 10pcs","offer_id":47850570219765,"sku":"14:200004889#13974994;200001249:202408829#10pcs;200497261:203372044#with  terminals","price":1496.8,"currency_code":"USD","in_stock":true},{"title":"13974994 \/ with  terminals \/ 20pcs","offer_id":47850570252533,"sku":"14:200004889#13974994;200001249:202408830#20pcs;200497261:203372044#with  terminals","price":2993.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S4ea6e3e0d7554ca589215b243e6698f43.webp?v=1773896417","url":"https:\/\/www.csldmcml.com\/products\/30-pin-automotive-waterproof-connector-13974994-heavy-duty-wire-harness-truck","provider":"Cable Parts Online","version":"1.0","type":"link"}