Mounts on A-pillar. Allows wires and tubes to be cleanly routed for finished look. 2 Gauge configuration with partial pillar covers or 2 or gauges wight full pillar cover for seamless built in appearance. Optional provision for factory speaker. Gauges sold separately or included with some Banks power systems. In addition to the 3-gauge mount; 1 and 2 gauge mounts are also available.