Hi I have just bought an Audi 80 2.0 Auto 1994 M reg. I noticed the temp gauge is not working I thought I would go for the obvious and change the switch only I can't seem to find which one and there are two choices on this one of two pin and three pin which I am not sure which is which on the car.

Could anyone tell me where the temp switch is located so I can purchase the right one please??