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17
Please make sure that the positive and negative poles of the power are connected correctly. If
not, the device may be damaged.
The diameter of the power cable should be more than 1.0 mm
2
. Use power cables
recommended by our company.
When connecting the cables to the device, make sure that the main power switch of the vehicle
is turned off and the key of the vehicle is placed in the off state.
2.3.5.1 Introduction of Power Cable
For the power cable of the device, see Figure 2-21.
Connect one end of the power cable to the power port of the device (the left port in the figure) or
directly use the power cable from the device. Connect the other end to the vehicle battery (the right
port in the figure). The red one with fuse is positive pole of the power (normal live). The black one is
the grounding cable. The orange one is the ACC signal (Key live).
Only some devices with the power cable connected can be directly used, subject to actual situation.
Power cable
2.3.5.2 Obtaining Connection Modes of the Main Power Switch
In order to ensure correct cable connection, it is necessary to obtain the connection mode of the
main power switch through three methods (is the main power switch connected to the positive or
negative pole of the battery?).
Ask the vehicle manufacture the connection modes of the main power switch of the vehicle.
Measure with a multimeter: disconnect the main switch, then measure the voltage between the
vehicle body and the positive pole of the vehicle battery. If the voltage is 12V or 24V, it means
that the main switch disconnects the positive pole. If the voltage is 0V, then the main switch
disconnects the negative pole.
Visual inspection: whether the switch cable near the vehicle battery is connected to the positive
pole or the negative pole.
2.3.5.3 Connecting Operation
The driving recorder must be connected to the ground wire. ACC signal, and constant electricity.
Enable the main power switch on the vehicle, place the key in the OFF state, and then
measure the normal live electricity of the vehicle.
Use a multimeter to measure the voltage on the fuse by switching to the DC voltage range.
When the multimeter detects voltage, it measures the normal live electricity on the vehicle.
Generally, the voltage is 24V DC for large vehicles and 12V DC for small vehicles. However,
this is subject to actual data.
When the vehicle key is placed at the ACC state or the ON state, the ACC signal of the vehicle
is measured.
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