The Chrysler 300 was a huge hit for the company when it was introduced in late 2004 (as a 2005 model). The 300 is still popular with consumers, and many owners enjoy customizing them. Stereo upgrades are popular customizations. If you want to install a new radio, you'll first need to remove the factory CD player. Chrysler 300 models come standard with either a single-disc CD player or a six-disc CD player, depending on the model.
Set the radio to "Transportation" before removing, if you have a Chrysler factory six-disc CD player. Turn your key to "Acc" and hold "Set" and "Disc" simultaneously. This will prevent an anti-theft lockout.
Unhook the ground (black) battery cable with a pair of pliers. Move the cable away from the battery post to prevent accidental contact.
Snap off the radio panel that extends to the air vents. You can use a trim-piece pry tool or your hands. Unplug the connections for the climate control and the analog clock. Move the panel out of the way.
Remove the four radio screws. You can use a Phillips screwdriver or a socket wrench (7mm).
Pull the radio from its mount slowly; it's still attached by a series of harnesses and plugs. Slide back the nut attached to the antenna cable, and then unplug the antenna cable.
Unplug the factory wiring harnesses. Completely remove the radio from its mount.