A/T Factory Temp Gauge?

[JFZERO ECLIPSE]

Bought a new car last week and she is an auto.... Still learning about autos and what now but I noticed on the headliner it has an auto temp display... Looked in the fsm and this is what I found....

What is the temp at which it lights up or anything?
Yes I know I will be installing an external cooler as well as a new temperature gauge as time goes on.

 

[RedEyeBanDiT]

I think all 91's have a factory tranny coolers. Not a bad idea to put in a bigger one though, or I hear some people run two small ones inline with eachother

 

[Bud92gsx]

Ive had my auto for 7 years and 23/24k miles and I have never seen the a/t temp gauge light up besides when you first startt he car.

 

[JFZERO ECLIPSE]

Mines never went on, aside from first starting the car....

I already have a large tranny cooler waiting to go on as well, once I throw a fmic on that is,

Just trying to figure out at what temp it actually lights up..... No doubt by time the light turns on the trans is probably toast anyways,.....