User manual PIONEER DEH-P4900IB

[. . . ] 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. [. . . ] 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. Cord function may differ according to the product, even if cord color is the same. When connecting this system, be sure to check all manuals and connect cords correctly. When this unit is installed in a vehicle without ACC (accessory) position on the ignition switch, red cable must be wired to the terminal that can detect the operation of the ignition key. 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. [. . . ] To prevent short-circuit, overheating or malfunction, be sure to follow the directions below. To protect the wiring, wrap adhesive tape around them where they lie against metal parts. [. . . ]