The power cable is the "artery" of your system and must be handled with care.
Before starting, ensure you have a high-quality wiring kit that matches your amplifier's power requirements.
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) .
To avoid interference, run the power cable down one side of the car and the signal (RCA) cables down the opposite side. Phase 4: Connection and Tuning