User manual PIONEER GM-X942

[. . . ] In such a case, switch the power to the system OFF and check the connection of the power supply and speakers. To prevent an electric shock or short-circuit during connection and installation, be sure to disconnect the negative (­) terminal of the battery beforehand. Confirm that no parts are behind the panel when drilling a hole for installation of the amplifier. Be sure to protect all cables and important equipment such as fuel lines, brake lines and the electrical wiring from damage. [. . . ] Pass the battery wire from the engine compartment to the interior of the vehicle. After making all other connections to the amplifier, connect the battery wire terminal of the amplifier to the positive (+) terminal of the battery. Do not ground the speaker wire directly or connect a negative (­) lead wire for several speakers. This unit is for vehicles with a 12-volt battery and negative grounding. If the car stereo is kept on for a long time while the engine is at rest or idling, the battery may go dead. Turn the car stereo off when the engine is at rest or idling. If the system remote control wire of the amplifier is connected to the power terminal through the ignition switch (12 V DC), the amplifier will always be on when the ignition is on-- regardless of whether the car stereo is on or off. Because of this, the battery could go dead if the engine is at rest or idle. Speakers to be connected to the amplifier should conform with the standards listed below. If they do not conform, they may catch fire, emit smoke or become damaged. The speaker impedance must be 1 to 8 ohms for stereo connection, and 2 to 8 ohms for monaural and other bridge connection. Install and route the separately sold battery wire as far away as possible from the speaker wires. Install and route the separately sold battery wire and ground wire, speaker wires, and the amplifier as far away as possible from the antenna, antenna cable and tuner. Cords for this product and those for other products may be different colors even if they have the same function. When connecting this product to another product, refer to the supplied Installation manuals of both products and connect cords that have the same function. Car stereo with RCA output jacks External Output RCA output jack RCA input jack Fuse (30 A) Drill a 14 mm Positive terminal hole into the Insert the O-ring rubber vehicle body. Expose the end of the speaker wires by about 10 mm and twist using nippers or a cutter. Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer Subwoofer Other than subwoofer The female terminal can be connected to the autoantenna relay control terminal. If the car stereo does not have a system remote control terminal, connect the male terminal to the power terminal through the ignition switch. Do not install in: --Places where it could injure the driver or passengers if the vehicle stops suddenly. [. . . ] The best location for installation differs with the car model and installation location. Make temporary connections first and check that the amplifier and the system operate properly. After installing the amplifier, confirm that the spare tire, jack and tools can be easily removed. Specifications and the design are subject to possible modification without notice due to improvements. [. . . ]