Prevent electrical damage by disconnecting the battery from your car. As with almost all types of electrical work, it’s important to protect yourself and the electrical system before you begin. Disconnecting the negative terminal of the battery prevents the risk of injury from electric shock or damage to the car’s electronics due to a short circuit, so be sure to do this before tampering with any internal electronics in your car.
Refer to all the instructions that came with your new speakers. Due to the wide variety of speaker models available, it is almost impossible to write a practical guide that covers all of them perfectly. The instructions below are very general and may not apply to all speaker models on the market. Whenever necessary, consult the instructions that come with your speakers, as they will be specific to your product.
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Remove any front parts or grilles from the speakers. Almost every speaker in a car interior is covered by some sort of dashboard or grille. Before modifying the speaker, this “barrier” needs to be removed. Remove the grille with a suitable tool, such as a screwdriver if necessary, and remove the screws that hold it in place if necessary.
The amount of work required to access factory-installed speakers may vary depending on the vehicle model. In the worst case, for example, you may have to remove the seats, enter the trunk to access important screws or wires, or even remove entire door panels to access the speakers.