[. . . ] When reattaching the trim ring, push the trim ring onto the unit until it clicks. (If the trim ring is attached upside down, the trim ring will not fit properly. [. . . ] Use either truss screws (5 mm × 8 mm) or flush surface screws (5 mm × 9 mm), depending on the shape of screw holes in the bracket. If there is enough space behind the unit, use factory supplied mounting sleeve. Secure the mounting sleeve by using a screwdriver to bend the metal tabs (90°) into place. Control signal is output through blue/white cable when this unit is powered on. If the vehicle is equipped with a glass antenna, connect it to the antenna booster power supply terminal. Never connect blue/white cable to external power amp's power terminal. This cable and other product's ground cable (especially, high-current products such as power amp) must be wired separately. Otherwise, fire or malfunction may result if they are accidentally detached. ISO connector Note In some vehicles, the ISO connector may be divided into two. Yellow/black If you use an equipment with Mute function, wire this lead to the Audio Mute lead on that equipment. Speaker leads White: Front left White/black: Front left Gray: Front right Gray/black: Front right Green: Rear left or subwoofer Green/black: Rear left or subwoofer Violet: Rear right or subwoofer Violet/black: Rear right or subwoofer 23. When using a subwoofer of 70 W (2 ), be sure to connect with Violet and Violet/black leads of this unit. [. . . ] -- Do not pass the yellow cable through a hole into the engine compartment to connect to a battery. -- Never cut the insulation of the power cable of this unit in order to share the power to other equipment. [. . . ]