Connections/Installation Connections Important • When installing this unit in a vehicle without an ACC (accessory) position on the ignition switch, failure to connect the red cable to the terminal that detects operation of the ignition key may result in battery drain. ACC position No ACC position • Use of this unit in conditions other than the following could result in fire or malfunction. – Vehicles with a 12-volt battery and negative grounding. – When speaker output is used by 4 channels, use speakers over 50 W (maximum input power) and between 4 Ω to 8 Ω (impedance value). Do not use 1 Ω to 3 Ω speakers for this unit. – When rear speaker output is used by 2 Ω of subwoofer, use speakers over 70 W (maximum input power). * Please refer to connections for a connection method. • To prevent a short-circuit, overheating or malfunction, be sure to follow the directions below. – Disconnect the negative terminal of the battery before installation. – Secure the wiring with cable clamps or adhesive tape. Wrap adhesive tape around wiring that comes into contact with metal parts to protect the wiring. – Place all cables away from moving parts, such as the shift lever and seat rails. – Place all cables away from hot places, such as near the heater outlet. – Do not connect the yellow cable to the battery by passing it through the hole to the engine compartment. – Cover any disconnected cable connectors with insulating tape. – Do not shorten any cables. – Never cut the insulation of the power cable of this unit in order to share the power with other devices. The current capacity of the cable is limited. – Use a fuse of the rating prescribed. – Never wire the negative speaker cable directly to ground. – Never band together negative cables of multiple speakers. • When this unit is on, control signals are sent through the blue/white cable. Connect this cable to the system remote control of an external power amp or the vehicle’s autoantenna relay control terminal (max. 300mA 12 V DC). If the vehicle is equipped with a glass antenna, 14 En connect it to the antenna booster power supply terminal. • Never connect the blue/white cable to the power terminal of an external power amp. Also, never connect it to the power terminal of the auto antenna. Doing so may result in battery drain or a malfunction. • The black cable is ground. Ground cables for this unit and other equipment (especially, high-current products such as power amps) must be wired separately. If they are not, an accidental detachment may result in a fire or malfunction. • The graphical symbol placed on the product means direct current. This unit Power cord input Rear output or subwoofer output Front output (Only for MVH-190UI) Antenna input Fuse (10 A) Wired remote input (Only for MVH190UI) Hard-wired remote control adapter can be connected (sold separately). Power cord To power cord input Depending on the kind of vehicle, the function of and may be different. In this case, be sure to connect to and to . Yellow Back-up (or accessory) Yellow Connect to the constant 12 V supply terminal. Red Accessory (or back-up) Red Connect to terminal controlled by the ignition switch (12 V DC). Connect leads of the same colour to each other. Black (chassis ground)
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