Coolant Temperature Sensor

You can use the stock Toyota coolant temperature sensor located in the water neck housing, and I chose to utilize it for my water temp sensor.
The E6K will read the data just fine and is accurate.

WIRING NOTE Connect the HALTECH BLACK wire to the BROWN in the Toyota wiring harness.
Connect the HALTECH Violet Wire to the remaining wire in the stock harness

Location of the stock sensor in the waterneck