Here's a general outline. This is NOT a substitute for a professional car audio installer's expertise. If you're not comfortable working with car electronics, it's best to seek professional help.
1. Identify the Amplifier and Speaker Wiring:
* Locate the amplifier: This is usually in the trunk or under the dash. You'll need to find it to trace the wiring.
* Trace the speaker wires: Follow the wires from the speakers to the amplifier. Note the color codes of the positive (+) and negative (-) wires. This is critical for proper connection. Often a wiring diagram is helpful, and you can usually find them online through a search engine or forums dedicated to 1996 Cadillacs. A factory service manual will be the most precise.
2. Bypass the Amplifier:
* Disconnect the amplifier: Disconnect the power and ground wires to the amplifier.
* Locate the speaker-level input wires: These are the wires going *into* the amplifier from the head unit. These are the wires you'll connect your new speakers to. Again, careful identification of positive and negative is crucial.
* Connect the new speakers: Connect the speaker wires from the head unit directly to your new speakers, matching the positive (+) and negative (-) wires carefully. The impedance of the speakers should match the output impedance of the head unit (if you have significantly different impedances, you can risk damaging the head unit). This means you'll be cutting and splicing wires and should use appropriate connectors (crimp connectors and heat shrink tubing are recommended).
3. Consider a Line Output Converter (LOC):
Your factory head unit likely doesn't output the kind of power aftermarket speakers need. Many aftermarket head units do, however, usually with RCA connectors.
* If you're using the factory head unit: It might not have the power necessary to drive aftermarket speakers. A line output converter (LOC) is a small device that converts the low-level speaker-level output from the head unit to higher level RCA signals that power aftermarket speakers better. This is often the better solution if you want to retain your factory head unit.
4. Test the System:
* Reconnect the battery: Carefully reconnect the car battery and test the speakers. Ensure the sound is correct and there's no distortion or unusual noises.
Important Safety Precautions:
* Disconnect the negative battery terminal before working with any wiring.
* Use appropriate tools: Use wire strippers, crimpers, and heat shrink tubing for safe and reliable connections.
* Consult a wiring diagram: A wiring diagram for your specific model is essential to avoid mistakes.
* Double-check your connections: Make sure all connections are secure and properly insulated to prevent shorts.
Again, if you are not comfortable with automotive electrical work, please take your car to a professional car audio installer. Incorrect wiring can lead to serious problems, including damage to your car's electrical system or even a fire.
