How to Install a Radio in a 97 Mercedes E300


1. Disconnect the negative terminal of the car battery using an adjustable wrench.
2. Insert the Mercedes removal keys in the slots on the left- and right-hand sides of the radio. Push the keys in the slots until they click into place. Pull on the keys and drag the radio unit out of the dashboard housing. Disconnect the wire harness from the rear of the radio by pushing the tab on the edge and pulling the connection apart. Pull out the radio antenna cable. Place the old stereo to one side.
3. Connect the new stereo. Attach the wire harness from the new stereo to the wire harness adapter. Push the connections together until they click into place. Repeat this process attaching the other end of the wire harness adapter to the wire harness from the Mercedes E300. Plug the radio antenna cable into the radio antenna port on the rear of the new stereo.
4. Slide the connected radio into the dashboard housing, taking care not to trap any of the wires. Push the radio into the housing as far as it will go. Reconnect the negative terminal to the car battery. Turn on the new stereo to test the installation.