{"product_id":"2-5-series-automotive-waterproof-connector-1-6-pin-haltech-map-tps-gm-sensor","title":"2.5 Series Automotive Waterproof Connector – 1\/2\/3\/4\/6 Pin Male \u0026 Female Plug for Haltech, MAP, TPS \u0026 GM Sensor Wiring","description":"\u003ch2\u003e2.5 Series Automotive Waterproof Connector – 1–6 Pin Male \u0026amp; Female Plug for Haltech, MAP, TPS \u0026amp; GM Sensor Wiring\u003c\/h2\u003e\n\n\u003cp\u003e2.5 series (2.5mm pitch) automotive waterproof connectors — the compact sealed connector standard used by Haltech ECUs, GM (General Motors) OEM sensor harnesses, and aftermarket performance sensor wiring. The 2.5mm pitch provides a smaller housing than the AMP Type 1.5 series while maintaining IP67 waterproofing and automotive-grade temperature resistance. Widely used in motorsport ECU harness builds for MAP sensor, TPS (throttle position sensor), coolant temperature, and other sensor connections that require compact, sealed connectors compatible with Haltech and GM OEM pinouts.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 2.5 series (2.5mm pitch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Configurations:\u003c\/strong\u003e 1, 2, 3, 4, 6 pin (select above)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 7A per contact\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP Rating:\u003c\/strong\u003e IP67\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\u003eHousing Material:\u003c\/strong\u003e PA66 nylon, flame retardant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Material:\u003c\/strong\u003e Copper alloy, tin-plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Range:\u003c\/strong\u003e 20–22AWG\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHaltech ECU Connector Compatibility\u003c\/h3\u003e\n\u003cp\u003eHaltech ECUs (Elite series, Nexus series) use 2.5 series connectors for many sensor inputs and outputs. Common Haltech applications:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-pin:\u003c\/strong\u003e MAP sensor (supply + signal + ground), coolant temperature sensor, intake air temperature sensor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-pin:\u003c\/strong\u003e TPS (throttle position sensor) with dual-track output, wideband O2 sensor controller connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e6-pin:\u003c\/strong\u003e Multi-function sensor clusters, fuel pressure + temperature combined sensors\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eAlways verify the specific Haltech ECU pinout documentation for your model before wiring — pin assignments vary between ECU generations.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGM OEM Sensor Connector Applications\u003c\/h3\u003e\n\u003cp\u003eGeneral Motors uses 2.5 series compatible connectors on many OEM sensors across multiple vehicle platforms:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMAP sensors:\u003c\/strong\u003e 3-pin 2.5 series on LS-series engines (LS1, LS2, LS3, LS7) and many other GM applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTPS:\u003c\/strong\u003e 3-pin on carbureted and early EFI applications; 6-pin on dual-track TPS for drive-by-wire systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant temperature:\u003c\/strong\u003e 2-pin on most GM coolant temperature sensors\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eVerify the specific GM part number and connector type against the vehicle service manual before ordering replacement connectors.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eWhat is the difference between 2.5 series and AMP Type 1.5 connectors?\u003c\/h4\u003e\n\u003cp\u003eAMP Type 1.5 series (1.5mm pitch) is smaller than 2.5 series (2.5mm pitch). Both are IP67 automotive waterproof connectors, but they use different contact sizes and are not interchangeable. 2.5 series connectors are used by Haltech and GM; AMP Type 1.5 is used by HID ballasts and other automotive lighting applications. Verify which series your ECU or sensor uses before ordering.\u003c\/p\u003e\n\n\u003ch4\u003eWhat crimp tool is required for 2.5 series contacts?\u003c\/h4\u003e\n\u003cp\u003eA dedicated 2.5 series crimp tool with the correct die for the contact size. Using the wrong crimp tool produces an incomplete crimp that fails pull-out testing and causes intermittent connections under vibration. For motorsport harness builds, use a ratchet crimp tool with 2.5 series dies — the ratchet mechanism ensures consistent crimp force on every contact.\u003c\/p\u003e\n\n\u003ch4\u003eCan I use 2.5 series connectors for Haltech wideband O2 sensor wiring?\u003c\/h4\u003e\n\u003cp\u003eYes, for the sensor-to-controller connection. Wideband O2 sensors (Bosch LSU 4.9, NTK L2H2) typically use a 6-pin connector at the sensor body. The controller-to-ECU connection uses the ECU’s native connector type (2.5 series for Haltech). Verify the wideband controller’s connector type before ordering — some controllers use different connector series.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHaltech ECU harness:\u003c\/strong\u003e MAP, TPS, coolant temp, and sensor input connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGM LS engine swaps:\u003c\/strong\u003e OEM sensor connector replacement and extension harnesses\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotorsport:\u003c\/strong\u003e Compact sealed sensor connections in weight-sensitive race car harnesses\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance tuning:\u003c\/strong\u003e Aftermarket sensor additions to OEM harnesses\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive repair:\u003c\/strong\u003e Replacement connectors for damaged GM OEM sensor harnesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003eMale plug housing + female socket housing (pin count as selected). Contacts and wire seals included. Quantity as selected.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"1P","offer_id":47850616357109,"sku":"14:200004889#1P","price":2.35,"currency_code":"USD","in_stock":true},{"title":"1P Male","offer_id":47850616193269,"sku":"14:350850#1P Male","price":1.54,"currency_code":"USD","in_stock":true},{"title":"1P Female","offer_id":47850615996661,"sku":"14:175#1P Female","price":1.54,"currency_code":"USD","in_stock":true},{"title":"2P","offer_id":47850616291573,"sku":"14:200004890#2P","price":3.01,"currency_code":"USD","in_stock":true},{"title":"2P Male","offer_id":47850616094965,"sku":"14:350852#2P Male","price":1.89,"currency_code":"USD","in_stock":true},{"title":"2P Female","offer_id":47850615898357,"sku":"14:193#2P Female","price":1.89,"currency_code":"USD","in_stock":true},{"title":"3P","offer_id":47850616324341,"sku":"14:200004891#3P","price":3.96,"currency_code":"USD","in_stock":true},{"title":"3P Male","offer_id":47850616127733,"sku":"14:350853#3P Male","price":2.38,"currency_code":"USD","in_stock":true},{"title":"3P Female","offer_id":47850615931125,"sku":"14:366#3P Female","price":2.38,"currency_code":"USD","in_stock":true},{"title":"4P Single row","offer_id":47850616226037,"sku":"14:200003699#4P Single row","price":4.69,"currency_code":"USD","in_stock":true},{"title":"4P Single row Male","offer_id":47850616029429,"sku":"14:10#4P Single row Male","price":2.73,"currency_code":"USD","in_stock":true},{"title":"4P Single row Female","offer_id":47850615832821,"sku":"14:496#4P Single row Female","price":2.73,"currency_code":"USD","in_stock":true},{"title":"4P Double row","offer_id":47850616258805,"sku":"14:200002130#4P Double row","price":4.69,"currency_code":"USD","in_stock":true},{"title":"4P Double row Male","offer_id":47850616062197,"sku":"14:29#4P Double row Male","price":2.73,"currency_code":"USD","in_stock":true},{"title":"4P Double row Female","offer_id":47850615865589,"sku":"14:691#4P Double row Female","price":2.73,"currency_code":"USD","in_stock":true},{"title":"6P","offer_id":47850616160501,"sku":"14:365458#6P","price":6.48,"currency_code":"USD","in_stock":true},{"title":"6P Male","offer_id":47850615963893,"sku":"14:173#6P Male","price":3.64,"currency_code":"USD","in_stock":true},{"title":"6P Female","offer_id":47850616389877,"sku":"14:771#6P Female","price":3.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S5c3295c990c5446ea72494eb7111c7deQ.webp?v=1773899389","url":"https:\/\/www.csldmcml.com\/products\/2-5-series-automotive-waterproof-connector-1-6-pin-haltech-map-tps-gm-sensor","provider":"Cable Parts Online","version":"1.0","type":"link"}