1. Power cord connection method

　　a) Constant current connection method

　　Explanation: Connecting to normal power means that the terminal works as long as the battery is charged, regardless of whether the vehicle's ACC switch is turned on or not; But after ACC is turned off, the device will slowly enter a sleep state.

　　Connection method: The positive pole of the power supply is directly connected to the positive pole of the car battery, and the negative pole is connected to the negative pole of the car (i.e. grounded);

　　Advantages: It can monitor the status of the car 24 hours a day; Disadvantage: When parking, it still consumes the power of the car's battery. The normal current of the terminal is 80MA, and the battery with a capacity of 50A can provide 600 hours of continuous use for the terminal equipment.

　　2. Wiring and inspection of 8 status bits

　　a) Eight status bits include: small light, right turn, left turn, door, horn, and brake;????

　　b) Corresponding to 8 zeros in the 8th menu item [Speed and Switching Value] of the terminal device

　　c) Basic line finding guidelines for switch values: for left and right turns, check the steering switch, instrument panel, and power distribution box, for door status, check the door switch and instrument panel, and for brake status, check the brake switch and instrument panel;

　　d) Due to factors such as vehicle wiring structure or human modifications, some models may have low-level or backflow switching signals. Therefore, when in a low-level state, a normally open and closed relay or a normally open relay can be installed to convert the low-level signal into a high-level signal; When backflow occurs, a diode can be added in series to the circuit;

　　e) Switch status inspection: Press the terminal device menu to item 8 [Speed and Switch Value], and check each switch value in sequence. When a certain switch status is triggered, its value changes from 0 to 1, indicating that the wiring is correct.

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