Brazilian Dodge Dart 76 (similar to 69 usa)

needsaresto said

I hope this helps.
http://www.hotrod.com/how-to/interior-electrical/23241-instrument-gauges-repair/

Click to expand...

thanks.
I did test my cluster based on that thread.
I still don't know why only on low temperature it presents problem. I will open an old temperature gauge to figure out how it works.

ps: I did made voltage regulators using electronic parts. It is simple and works really well.