W123 W123 Blower will not shut off......

[Dionysius]

My 1979 W116 and 1980 W123 diesels both have blower problem with blower not shutting off. I have heard that there is a regulator box somewhere. Blower motor is fine....tests good.

Anybody know where that regulator box is???

I only need 2 blower states......full on and off. Heat only. a/c is gone years ago.

Can I patch out the regulator box so only the defrost console button gives me full speed (as it now does) and the off button removes power???