urgh
Zis block, here! Its at the back or the mirror baseplate, Its easier to remove the mirror altogether to get acess to it, this is where you need to connect your temp sensor into
I THINK the temp sensor needs to be plugged into numbers 2 & 3, However i cant say for definate as i removed my temp sensor a while ago on a spare mirror, All will become obvious when you see the connector on your car the wires whould be there for you to match up to, makes no odds which way they go round as they have no polarity IIRC