hi here is a wiring diagram for the radio
the plastic cover only covers the airbag screws
and in the rear we dont have a tray only the cover that you have
for any parts like trim go to a scrappy no point in paying dealer prices
to remove the stereo remove the ashtray and behind the front you will see 2 screws
remove these and the two above the stereo
gently pull the trim towards you take care at the top as there are some clips that hold
the panel in place
when loose remove the plug from the headlight leveling switch
the earth for the original stereo is through the casing as it is bolted to the metal frame
your ready to install your new one
