I have a problem with the car overheating when it sits stationary for over five minutes. I think the fan temp sensors knackered but want to eliminate everything else. If I connect the green connectors under the dash with this switch the fan on? If this works then I know it’s not the fan. Secondly, if it is the fan temp sensor, where is it? Thanks for your help. I don’t think it’s the thermostat because it never over heats when I’m on the move.