Wiring method of car radio
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1. The red line is connected to the ACC output line of the ignition switch, the yellow line is connected to the positive electrode of the battery B, the black line is connected to the negative electrode of the battery, and the purple line is connected to the electric antenna motor.
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2. The automatic antenna has three wires: live wire, ground wire and signal wire. They can both be connected in parallel to the firewire in the car, and can also be connected in parallel to the ACC (Signal control line). However, if the fire line is connected, the audio is not controlled by the car key, that is, after the car unplugs the key, the audio can not be automatically turned off, and the audio switch must be manually turned off. If you connect to ACC, if your stereo has a machine with memory function, this function will be disabled. Every time the key is turned off and on again, the machine starts from scratch and the clock function of the device on the radio also fails to keep track of the time.
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3, as long as the positive and negative terminals are correctly connected. Usually no problem. Then find the speaker wires and connect them in turn. Remember, the negative line of the speaker must not be directly connected to the negative terminal of the battery, which is easy to burn the power amplifier module of the radio.
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4. Car radio is a voice entertainment configuration installed on the car, and it is one of the earliest and most common configurations of the car audio and video entertainment system.