high temp light in guage

[madrogers]

I have a 86 cabriolet with what looks like a red led light in the  dash temp guage, I was wondering if anybody knows what controlls it , is there a seperate sender on the engine or is in the guage itself that turnes it on when the temp gets to high.
thanks for any input , Mark.

[Vincent Waldon]

The cluster has the circuitry that drives high temp light, and it's driven by the same coolant temperature sensor that drives the gauge.

[madrogers]

Thanks for the info Vince. I have leared a littel bit more today.