"Unthaw" would be the same as freeze, I believe you mean thaw?

Anyway, the nozzles are on with the key, thermostatically controlled, same as the mirror heaters and in later models the lock heaters.

Replacing the heated nozzles in the 124 and 201 is a bit more difficult than the ones in the DieselGiant tutorial, but pretty much self-explanitory as you go.

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Gone to the dark side

- Jeff