DuncanC

Hi Bibio, Sid,
Thanks for the replies. I think I have the 2 thermistors as I had the flashing light then the steady light with the original clocks.
I was told that there was a fuel light function on the koso gauge so I was hoping I could use one of the 2 low level switches to activate the light.
The question I suppose is, is 3.65 volts the maximum output from the thermistor or is that some part submerged output.
Then if the output increases when the thermistor is fully exposed at what point does it light the light? I am aware that this is not a fuel gauge function as it is only measuring the bottom of the tank and that the output is for practical purposes on/off.
Or if the thermistor maximum output is 3.65 v then do I need to switch a low voltage relay to power a 12 v signal to the fuel light?
I guess my next step is lower the fuel level and see if the voltage changes.
Ask Koso what input they expect to see for the fuel light to work?
Source a relay that works at 3v.
bang head against a wall.