>Taking this even further afield of a useful EE: topic...
>
>I've always wondered why auto manufacturers haven't augmented cold
>weather car defrosters with electric heat...

Well I have been seriously thinking of mounting some "concrete block" or
aluminium cased power resistors on the back (well surface to the front of
the car) of my wing mirrors and hooking them into the back window heater
circuit ... I reckon a watt or two per wing mirror should be heaps.

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