It is simple to remove your Nissan radio. You will need a flat-head screwdriver for prying the panels off the dash to Access the radio. Clarion radio removal keys are ideal for freeing the head unit from the mount.
Different car radio models require differently shaped removal keys.
For further help in removing your Nissan Clarion radio, please see this YouTube video
Once the radio has been removed you will need to locate the radios label, which is on the top or side of the radios casing. The Nissan Clarion radio serial is a 14 digit serial, for example CL052950166113. We also need the model number, for example this looks something like PN-2424M Please see images below for reference.