Before starting, ensure you have a high-quality wiring kit that matches your amplifier's power requirements.
Connect the thin "remote turn-on" wire. This tells the amplifier to wake up only when the radio is turned on, preventing battery drain.
Connect the subwoofer to the amplifier using high-quality speaker wire. Ensure the positive and negative terminals match to keep the speaker "in phase."
Connect the RCA cables from the back of your head unit (radio) to the amplifier. If using a factory radio without RCA outputs, you will need a Line Output Converter (LOC) .