[. . . ] If there is enough space, use the mounting sleeve that came with the vehicle. [. . . ] If you do not plan to detach the front panel, the front panel can be fastened with supplied screw. This product Microphone input Rear output or subwoofer output Front output Wired remote input Hard-wired remote control adaptor can be connected (sold separately). When using a subwoofer of 70 W (2 ), be sure to connect with Violet and Violet/black leads of this unit. 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 * 11. ISO connector Note In some vehicles, the ISO connector may be divided into two. When using a subwoofer of 70 W (2 ), be sure to connect with Violet and Violet/black leads of this unit. [. . . ] ISO connector Note In some vehicles, the ISO connector may be divided into two. [. . . ]