As far as I know, the blower on a 124 is under the windshield wiper.
In a 126, it would be under/behind the glovebox/airbag.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D