In this episode of the Aftermarket Audio Podcast, We break down the fundamentals of car audio wiring — from choosing the right wire gauge and running clean power and ground, to routing RCA and speaker cables without interference. We cover fusing, distribution blocks, the Big 3 upgrade, and the essential techniques for making rock-solid connections using ferrules, crimps, solder, and heat shrink. Whether you’re doing your first install or leveling up your skills, this guide will help you build a reliable, great-sounding system.