Plug and Pins Only – Delphi 2 Pin GM style Coolant Temp Connector (Black)

Electrical Continuity: Delphi 2-Pin GM Coolant Temp Connector

In harness integration projects involving the ubiquitous GM engine platforms, achieving a factory-reliable connection is paramount. The Plug and Pins Only – Delphi 2 Pin GM Style Coolant Temp Connector is the definitive interface for standard GM coolant temperature sensors. This black rectangular connector is designed for high-heat environments and suits the HT-010300 (Small thread) and HT-010302 (Large thread) Coolant Temp Sensors. Utilizing genuine Delphi-spec components ensures that your standalone ECU integration maintains signal integrity, which is foundational for accurate fuel map calibration and cooling fan management.

Engineering Principles: Metri-Pack Contact Reliability

The Delphi 2-pin connector utilizes the Metri-Pack 150 series terminal system, specifically engineered for the high-vibration and chemically hostile engine bay environment. These terminals provide a high-pressure mechanical bond that minimizes electrical resistance, ensuring that the 5V reference signal and sensor return remain stable. This is a critical Analogue-to-Digital interface; even a tiny amount of corrosion or pin-fretting can cause the temperature reading to “drift,” leading to incorrect ignition advance or fan cycling. The housing is constructed from high-grade, glass-reinforced nylon that prevents the plug from becoming brittle over time on LS-swap or LT-series engines.

Operational Benefits for Professional Loom Builders

For builders performing a custom “flying lead” install or building a motorsport-grade harness for a V8 swap, this “Plug and Pins Only” kit provides the flexibility needed for a professional finish. It allows the installer to terminate the temperature signal wires at the exact length required, eliminating the need for messy pigtail splices which can act as a source of EMI (Electromagnetic Interference). In a standalone ECU integration, having a secure, weatherproof connection at the CTS is vital for safety; if the ECU loses the temperature signal, it can trigger ECU Trouble Codes and drop the engine into a limp mode to prevent overheating.

Fitment and Integration Requirements

This kit includes a pack of 2 precision pins and the 2-pin black Delphi-style female housing. It is a direct fit for most GM-derived temperature sensors used in the LS1, LS2, LS3, and Vortec engine families. For a professional, gas-tight termination, it is mandatory to use a high-quality Metri-Pack 150 crimping tool. The housing features an integrated seal that locks out oil, coolant, and road spray, ensuring that the electrical interface remains pristine throughout the life of the vehicle. It is fully compatible with Haltech Nexus and Elite series ECUs during harness integration.

Technical Specifications Table

Summary & Includes

The Delphi 2-Pin GM Style Connector is the prerequisite for reliable LS thermal sensing. Includes: 1 x 2-Pin Black Connector Housing and a Pack of 2 Precision Crimp Pins. Note: Specifically designed for Metri-Pack 150 series temperature sensor interfaces.