Just replace head gasket and now temp gauge doesn't seem to be working, have checked fuses? Where is the sending unit located? Maybe we didn't reconnect it.

Under the distributor. It has a one-wire connector. The two-wire connector goes to the ECT Sensor.

Under the distributor. It has a one-wire connector. The two-wire connector goes to the ECT Sensor.Thanks TGM. It was just what we needed. Had just replaced our first head gasket and temp gauge wasn't working. With your bit of info found wire we hadn't connected and where to look for pin.