water temperature warning light

[kieronriley]

does anyone have a diagram of how to wire a water temperature warning light,thanks,Kieron

 

[prv]

From a positive supply, through the light, to the sensor on the engine. It would be sensible to use a positive supply that is only on when the engine is running, although I guess that's not mandatory.

When the sensor gets too hot it connects its terminal to the engine block, which will be connected to battery negative and complete the circuit.

Pete

 

[VicS]

From a positive supply, through the light, to the sensor on the engine. It would be sensible to use a positive supply that is only on when the engine is running, although I guess that's not mandatory.

When the sensor gets too hot it connects its terminal to the engine block, which will be connected to battery negative and complete the circuit.

Pete

Unless the engine has an isolated negative, in which case a two wire sensor will be required with the second wire returning to a connection to the DC negative

 

[kieronriley]

temp light

thanks very much for that info,Kieron