1、 The positive wire of the power cord for GPS and Beidou positioning products is red, while the negative wire (grounding wire) is black. The red wire is connected to the positive pole of the power supply, and the black wire is connected to the vehicle ground to power on and work. When installing, please try to connect the vehicle's battery for a long time, that is, after removing the car key, measure the power cord with electricity.

　　2、 The blue line of GPS and Beidou positioning products is the car ACC detection line, which can monitor the vehicle's ignition status/key switch status after being connected (without wiring, it does not affect vehicle positioning). The wiring method is as follows:

　　1. Open the car key and measure to identify the energized circuit

　　2. After turning off the car key for the above electrified lines, measure and find out that the key is out of power. Connect the line with power to the blue line of the device when turning on the key.

　　3、 The yellow line of GPS and Beidou positioning products is an analog quantity 1 sensing line, mostly used for oil quantity monitoring. The wiring method is to connect the yellow wire to the signal output terminal of the oil level sensor.

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