1982 300CD No Temperature Reading Dash

[skeppa12]

Hello,

I am working through an issue with my temp readout on the dash.

Have attached a picture of the temp reading after the car has been running for about 10minutes. I am not getting any values above 40degC. I do see the needle move slightly after ignition but it does not move past this point.

What I have done so far:

1) Exchanged the temp sensor near the glow plugs on the block
2) Cleaned the ground points behind the dash
3) Connected an additional ground wire to the 2 nuts on the back of the instrument cluster

Any other ideas to get this fixed? I didn't test the wire from the sensor end to the dash (it is hard to follow).