Telefunken TF-CCR8101 Instruction Manual page 6

Installation
Dismantling the unit
1. Make sure the ignition is turned
off, then disconnect the cable from
the vehicle battery's negative (-)
terminal.
2. Remove the metal strap attached
the back of the unit (if attached).
3. Insert both of the supplied keys
into the slots at the middle left and
right sides of the unit, then pull the
unit out of the dashboard.
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