E30 Zone

Hi guys, I just changed a broken plug on my blue temp sensor and am trying to trace the wires back to the Ecu.

None of the pin out diagrams I have show where the blue temp sensor is grounded.

I have 400+ ohms when cold across the sensor and continuity from + terminal to pin 78.

Just can't find the ecu pin for the - ve side.

Any help would be great.

Thanks

Scratch that, found it. Across pin 43

There is a really good ECU diagram I used for my ECU swap. Did I send it to you before? If not I'll dig it out and see if I can post it or send it ober.