Remove the original speaker. Note that the speaker is usually—but not always—connected to a wiring harness, so be careful not to tear it off when you remove it. You may also need to unscrew one or more small screws and/or remove a small adhesive foam pad or glue that holds the speaker in place.
If you think you may need to reinstall the original speakers in the future (for example, if you sell the car), remember to save the screws you removed!
Connect the new speaker to the car’s electrical system. Connect the new speaker to the car’s electrical system. Usually, connecting the new speaker is a simple matter: just connect the wiring harness to the car’s wiring harness. However, if your car does not have this simple connection system, you may need to connect the speaker using a soldered or crimped connection.
Be sure to observe the correct polarity for your car and speaker connections. Usually, the positive terminal of the speaker is the larger of the two and is marked with a “+” or a small dot.
Electrical tape can be a risky choice for wire connections, especially on the panel, as temperature fluctuations can weaken it.