RCS-005 - Connector Set - Engine Coolant Temperature (ECT / CTS) Sensor
This connector set is commonly used on many early to mid model GM engine harnesses for the engine coolant temperature sensor. Typical applications are repair or conversions / upgrades.
FEATURES:
- Fully Plug and Play with the factory ECT / CTS sensor
- OE-type weatherproof connector
- 3 terminals included (1 spare) recommended for use with 18-16 gauge wire
- Recommended wire O.D. is 1.65 to 2.15mm
TERMINAL DESIGNATIONS:
| TERMINAL |
FUNCTION |
WIRE COLOR |
| A |
Engine Coolant Temperature (ECT) Sensor - Ground |
Brown |
| B |
Engine Coolant Temperature (ECT) Sensor - Signal |
Yellow |

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