Hi
I have just bought a second hand T reg Ford Focus 1.8 petrol Zetec,
When i turn the key i get a loud clicking noise coming from the dashboard around the glove box. It only happens for a couple of second, then stops. I have been told it is a fault with the heater and is simple to fix can any of you lovely peeps give me more information on what it is and how easy it might be to fix

Thanks
Orla