How to Install Aftermarket Receivers in a Car

If your old car stereo is sounding crackly and tired, you can replace it with an updated version that adds new features. Add a compact disk or mp3 player capability, Ipod support and even a graphical positioning system with your new audio tuner. Aftermarket receivers usually come with specific directions, or you can follow these steps to install one.

Instructions

Difficulty: Moderate

Things You’ll Need:

• Ratchet and socket
• Flat screwdriver
• Phillips screwdriver
• Din tools

1. Detach the negative cable from the terminal on the battery. Loosen the clamp nut with a ratchet and socket. Place it where it will not touch the terminal while you are working.
2. Remove the old audio receiver from the car. You may have to use a screwdriver to remove several screws to get the faceplate and mounting hardware out, or you may need special tools to release spring-loaded clips. Purchase these Din tools along with your new stereo receiver at an auto parts store, or you can make your own from a wire coat hanger.
3. Unplug the electrical connectors from the rear of the old receiver, taking care not to break the plastic clips holding the wires. Disconnect the antenna wire.
4. Ensure you purchase the correct new receiver for your car. It will come with electrical adapters, so you can simply plug the new receiver into the existing wiring harness.
5. Install any mounting brackets to the new receiver for a bolted installation. Your new stereo receiver should come with brackets, or you can reuse the old ones.
6. Connect all electrical wires and reconnect the antenna wire to the new car audio tuner.
7. Slide the new receiver back into the cavity and check if it works before finishing the installation. Carefully replace the car's negative cable to the terminal. Turn the ignition switch to accessory and try the new receiver.
8. Finish bolting the aftermarket stereo receiver in place, or slide it in until the spring-loaded clips engage. Replace any trim pieces you removed.

Tips & Warnings

• Look for a faulty ground cable if your new receiver has poor performance.
• Place the car in park and set the parking brake so it doesn't accidentally roll while you are working around it.