Radio Shack 120-2182 - Manual (Page 8)

2. Connect the Audio Adapter's antenna plug to your sound system's
antenna jack.
3. Connect the Audio Adapter's 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 Audio Adapter's red power wire (with inline fuse holder)
to a point in your vehicle's fuse block that has power only when you
turn the vehicle's key to either the accessory (ACC) or START position
This connection turns on the CD changer and its components when you
turn on the ignition or turn the key to ACC, and turns off the CD
changer and its components when you turn off the ignition. This
prevents your vehicle's battery from being drained if you leave the CD
changer on when you turn off the ignition.
5. Connect the Audio Adapter's 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.
6. Use a screwdriver to slide ISOLATOR on the side of the Audio Adapter
to OFF.
7. Set 88.7/89.1 MHz on the side of the Audio Adapter to an active
frequency in your area, if available. This is the frequency you tune
on to your vehicle's sound system to hear the CD changer.
Note: If there is no FM broadcast on either 88.7 or 89.1 MHz in your
area, you might hear static when the CD changer is not playing
a CD.
Connecting The CD Changer
1. Disconnect the cable from your vehicle battery's negative (-) terminal
2. Connect the CD changer to the Audio Adapter by inserting the plug on
one end of the CD changer cable into the 8-pin CD CHANGER jack on the
Audio Adapter. Then insert the plug on the cable's other end into the
DIN 8 PIN jack on the left side of the CD changer.