i have a 93 4.0l yj and my coolant temp gauge is not working now i've replaced the coolant temp sensor. but still the gauge is not moving. so i looked at my ondemand schematics and found that
from ecu to coolant sensor is a tan/black wire. the second wire on the coolant senosr is a black/light blue wire that is a sensor ground from the ecu.
for the temp gauge it says there is a vilot/yellow wire that goes from the gauge staight to the coolant temp sensor but that is not the cast.
so where does the violet/yellow (sending wire) for the coolant temp gauge come from?

thanks
lee