The French auto manufacturer Peugeot produced the 406 saloon can from 1996 to 2004. It came with a pre-installed radio, which included as its features an AM/FM receiver with a CD or cassette player. If you would like to install an aftermarket CD player, which includes more up-to-date features, then you must adapt the wiring to allow the new player to function in the 406. Disconnect the car battery for safety before starting the procedure and adapt the radio housing to allow the aftermarket stereo to fit.
Insert DIN radio removal keys into the slots on each side of the radio. Push them in until they are locked into place. Pull on the keys to drag the stereo out of the dashboard. Disconnect the wire harness and the radio antenna cable.
Connect the wire harness coming out of the dashboard -- containing the power, ground and speaker wiring -- to a custom wire harness adaptor. Click the ends together and pull on the connection to check it is secure.
Connect the wiring on the new CD player to the other end of the wire harness adaptor. Click the ends together and pull on the connection to check it is secure.
Plug the thick black radio antenna cable into the matching port on the left-hand side of the rear of the radio.
Slide the wiring of the CD player into the dashboard housing. Follow it in with the CD player, taking care not to trap any wiring. Push the CD player in until it locks into place.
Reconnect the 406 battery. Turn on the radio.