1982 300sd. More often than not, i have no blower motor. No function when high or low selected on fan speed. Occasionally works when in automatic mode or defrost. Never stays working for more than 5 minutes. Usually only works when car is first started. Given the symptoms, I am pretty sure the ccu has bit the dust. I am going to try to pick a used one, any other possibility's or more common failure points?

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1982 300sd, new project car to restore

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