ZZ2 integration modules help Auto Audio bridge the gap between factory vehicle systems and the aftermarket technology our customers want to add. In the Twin Ports area, where many customers drive late-model vehicles with complex factory electronics, ZZ2 lets our technicians install new stereos and audio systems while keeping steering wheel controls, factory displays, and other OEM features working correctly. It is one of those behind-the-scenes tools that makes a meaningful difference in the quality of the finished install.