User manual PIONEER DEH-4000UB

[. . . ] -- it may cause injury to a passenger as a result of a sudden stop. Install this unit away from hot places such as near the heater outlet. Optimum performance is obtained when the unit is installed at an angle of less than 60°. [. . . ] Never connect blue/white cable to external power amp's power terminal. Also, never connect it to the power terminal of the auto antenna. Otherwise, battery drain or malfunction may result. 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. In this case, be sure to connect 2* to 5* and 4* to 3*. Cap (1*) Do not remove cap if this terminal is not in use. ISO connector Note In some vehicles, the ISO connector may be divided into two. In this case, be sure to connect to both connectors. Yellow/black If you use an equipment with Mute function, wire this lead to the Audio Mute lead on that equipment. If not, keep the Audio Mute lead free of any connections. In another type of vehicle, never connect 6* and 7*. 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 24. Perform these connections when using the optional amplifier. [. . . ] -- Place all cables away from moving parts, such as gear shift and seat rails. -- Place all cables away from hot places, such as near the heater outlet. -- Do not pass the yellow cable through a hole into the engine compartment to connect to a battery. [. . . ]