It did workk and now, annoyingly, just as the weather gets cold enough to want to run the heater and the windscreen demister in particular, it doesn't work any more.
Where is the actual fan located, and how do I get to it? Is it in the heater box under the hood? Or under the dashboard somewhere?
We changed my car up to 12 volts a few months back - are we likely to have burned out the fan motor? And is it possible to buy or fit 12 volt fans?
Any hints gratefully received to save me wasting time disassembling things where I do not need to!