Wire Gauge Chart for Car Audio Systems

By Doug Newcomb, Mike Mettler

Part of Car Audio For Dummies Cheat Sheet

When wiring your car audio system, using the proper gauge wire for an amplifier is critical. To avoid problems and get the best sound, determine the fuse ratings of your amplifiers and their distance from the battery and refer to the following chart to determine the proper power-wire gauge. For example, if your amplifier is drawing 60 amperes of current and the distance to the car’s battery from the amplifiers is 12 feet, locate where the ampere rating along the top intersects with the approximate distance in the middle area of the chart, and then determine the proper wire gauge on the left. (In this example, it would be 8 gauge.)