In any car stereo system, regardless of total power, the ground wiring is every bit as important as power and signal wiring. Ground wires complete the circuit from the battery, so without proper grounding, nothing works. Using proper techniques, such as bolting the ground to bare metal, helps ensure system noise is minimized and reliability increased. This is especially true when grounding multiple amplifiers and devices, with ground loops and intermittent operation threatening quality sound. Writer Bio
