CHEVROLET 1999 Corvette - Manual (Page 182)

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CD Adapter Kits
It is possible to use a CD adapter kit with your cassette
tape player after activating the bypass feature on your
tape player.
To activate the bypass feature, use the following steps:
1. Turn the ignition to ON or ACC.
2. Turn the radio off.
3. Press and hold the TAPE AUX button for five
seconds. The tape symbol on the display will flash
for two seconds, indicating the feature is active.
4. Insert the adapter. It will power up the radio and
begin playing.
This override routine will remain active until EJECT
is pressed.
AM-FM Stereo with Compact Disc Player
and Automatic Tone Control (If Equipped)
Included with the AM - FM Stereo with Compact Disc
Player and Automatic Tone Control, are six Bose
amplified speakers. See your dealer for details.