Quote Originally Posted by Spike View Post
perfect, that confirms that I have the correct sender fitted [52 ohm reading warm] thanks.
does anyone know what resistor size I need for bridging across the wire [to the sender] and negative?
If you want to test the gauge with a resistor, you will need either some fixed value resistors in the range of 73 - 10 ohms or a potentiometer that has the same range available. For a quick check, short the dark green wire connected to your temp sender to earth and then briefly turn the ignition on. Your temp gauge should go to full scale deflection.