Quote
larger, 2-pin, which I assume is used by the FCU
- smaller, 1-pin, above right, which I assume is the gauge
- another smaller 1-pin below the thermo valve on the right



Larger two pin with connectors in a tee, pointing forward, is the ecu ect sensor.

Smallest one pin is a thermoswitch to control o/d shifting.

Medium one pin is gauge sensor.

Thermo switch should show either open or almost zero resistance to ground. Gauge sensor should show some temp dependent level of resistance, never open, never almost zero.


Not responsible for advice not taken...