Editing Z31/stereoinstall php (section)

=== Removal of Factory Head Unit ===

* Disconnect the (-) battery cable from the battery. This keeps you from shorting out the circuit and blowing fuses.
* Place the hand brake on and move your shifter to the rearmost position.
* Pull the ash tray out with a firm tug to reveal the two screws that hold the lower part of the bezel. Using a Phillips #2 screwdriver, remove these two screws.
* Remove the two uppermost screws hidden under the lip of the top of the trim bezel with the same screwdriver.
* With the bezel loose, carefully pull it out to access the connectors for the lighter and its light. Unplug these and set the bezel in a safe place.
* Now you have access to the radio and climate control bracket. It’s held in with four 10mm bolts: two on top and two under the head unit.
* With these bolts removed, pull the radio and climate control out to access the electrical plugs. Carefully disconnect all plugs and remove the mount, being careful not to hit your shifter.
* With the mount removed, you’ll see screws holding the stock head unit. Remove all four screws and the stock unit should slide out, including the trim panel.