Had car ticking over for 5 mins or so earlier and there was no movement on temp gauge

What colour are the 2 wires for water temp sensor on pump?
looking at Haynes there orange and v (purple?) mines orange and green?

And are they on the same block out of bulkhead with the plug for brake reservoir (or have I connected something else up)

Also does anyone know what sort of ohms resistance I should be getting at what temp on the sensor