ahh that time of year again. Let the Thermostart threads begin.
My 2000 does not have a light, at least im sure it dont. Lets see there are 3 lights temp, charge and ??? maybe there is a light? I dont remember. I just switch it for 10 seconds if i use it but i have never put deisel fuel in the bottle so im not sure if it ever did much? I really dont need it even down to the 30's, but i do live in SC.