Special fixture:
1 - grips for removing the car radio.
Disconnect the battery.
Insert two hooks [1] into the holes (A) car radios (1).
Press the catches until they stop, then remove the car radio by pulling it towards you.
Disconnect the car radio (1).
Disconnect electrical connections (2) (depending on the type of radio).
Disconnect the antenna cable (3).
Install the parts in reverse order.