[s-cars] 1993 S4 Stereo Radio/Cass with 10 disc

[Djdawson2 at aol.com]

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The power supply to the radio isn't switched from the factory.  As a result,
the radio will be on until turned off.  If you were to change that input to
one switched by the ignition, you may end up with non-functional radio memory,
or worse yet, have to enter the security code each time the car was turned on.
Dave in CO