U just take out and slide in the new one!
See "Related Questions" and "Related Links" below for radio wiring diagrams.
Remove the retaining cover from your factory stereo. Remove the factory stereo retaining bolts. Slide the factory stereo out. Remove the wiring harness and the antenna cable from the back of the factory stereo.
http://www.modifiedlife.com/2000-ford-explorer-car-radio-stereo-wiring-diagram/ factory wiring color codes
Call Crutchfield. They have the installation kit, diagrams and instructions.
Electric Energy to Sound Energy.
To change the factory stereo in a 2000 Vectra, first, disconnect the car battery to ensure safety. Remove the trim panel around the stereo using a trim removal tool, then unscrew the stereo from its mounting bracket. Disconnect the wiring harness and antenna from the back of the factory stereo. Finally, connect the new stereo using the appropriate wiring harness adapter, secure it in place, and reattach the trim panel before reconnecting the battery.
Remove the 2002 Dodge Durango factory stereo decorative cover. Remove the factory stereo retaining screws. Pull the factory stereo out. Remove the wiring harness and the antenna cable from the back of the stereo.
if your not going to use the old factory stereo, take it apart and you will find that the circit board is labled where it plugs in. Or go to your nearest stereo shop and get a wiring harness for $20.
Use a line out converter spliced into the rear speaker wires to connect RCAs to a sub amp.
you need to pop out the frame and unscrew the radio. You will need a wiring harness for an after market stereo.
http://www.modifiedlife.com/1998-ford-explorer-car-radio-stereo-wiring-diagram/ Color codes for factory wiring
An electromagnet drives the stereo speaker to provide the sound.