Write an article based on this "Locate the main power fuse for your audio system. Remove the main power fuse. Put the resistor in place of the main power fuse. Measure the voltage on the capacitor with a voltmeter. Remove the voltmeter. Remove the resistor. Replace the main power fuse."
This fuse is installed with your system to prevent damage to the electrical components of your car, but will need to be removed before charging the capacitor. It should be near the battery on the main power line for your audio system. This this will provide you a place to install the resistor that will help you charge your capacitor. The resistor allows the capacitor to charge more slowly. This prevents damage to the capacitor and the electrical system. It is usually recommended to use a resistor that is 1 Watt and 500-1,000 Ohms. A higher impedance (Ohm value) will charge the capacitor more slowly and prevent damage. Connect the positive terminal of the capacitor to the resistor. A multi-meter will do the job fine as well. Set it to read DC Volts and put the positive lead of the meter on the positive terminal of the capacitor and the negative lead of the meter to ground. When the meter reads 11-12 volts, the capacitor is charged. Another way to charge a capacitor is to wire a test light from the positive terminal of the capacitor to the power line. As long as the capacitor is charging, there will be current flowing through the light and the light will shine. Once the capacitor is charged the light will go out because current will no longer be flowing (the voltage drop between the power line and the capacitor will be zero). It is no longer necessary to monitor the status of the capacitor. If you used the light method, you can now remove the test light. Disconnect the positive terminal of the capacitor from the resistor and disconnect the resistor from the power wire. It is no longer needed, so you can store it away in case you ever need to charge your capacitor again. This will allow your audio system to receive power once again.