Radio Shack 120-2182 - Manual (Page 9)

3. Connect the black ground wire to a chassis ground, such as a metal
screw attached to a metal part of the vehicle's frame. Be sure that
the screw is not insulated from the chassis by a plastic part.
4. Connect the yellow memory back up wire (with in-line fuse holder) to
your vehicle battery's positive (+) terminal or to a fuse that
provides a continuous source of 12 volts.
This connection provides power for the CD changer and its components, and
continuous power for the CD changer's memory when the ignition is turned
off.
CAUTIONS: The CD changer cable's plugs fit only one way into the Audio
Adapter and CD changer. Do not force them. The recess mark on
the metal rim of the DIN plug should face down.
To disconnect the CD changer cable from the Audio Adapter and
CD changer, squeeze each plug, then gently pull it out.
Never pull on the CD changer cable.
Connecting The CD Changer Controller
To connect the CD changer controller to the Audio Adapter, insert the CD
changer controller cable's plug into the 6-pin CONT. jack on the Audio
Adapter.
CAUTIONS: The plug fits only one way into the Audio adapter. Do not force
it. The Oval recess mark on the metal rim of the DIN plug should
face down.
To disconnect the controller from the Audio Adapter, gently pull
it out.
Never pull on the controller's cable.
Testing The Connections
Make sure all connections are secure before continuing with the
installation. Then reconnect the cable to the vehicle battery's negative
(-) terminal.
Verify that you connected the CD changer correctly by turning on the
changer and playing a CD. Try to use the remote control by pointing the
front towards the wired CD changer controller and pressing PLAY/PAUSE or
POWER OFF.