FD Temp gage, linear mod
 

3RD gen Coolant temp gage mod, just can't find it.
I have searched for it but I can't find the mod information on how to tweak the coolant temp gage from it's screwed up exponential operation to a more linear one. I seem to remember having to remove the gage and jumper a circuit and then a creation of a calibration "black box". Would someone point me to it?

^Good link.