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15
2.4.1.1 Overview
For the power cable of the device, see Figure 2-13.
Connect one end of the power cable to the power port of the device (the left port in the figure)，
connect the other end to the vehicle battery (the right port in the figure).
The black one is the grounding cable.
The red one with fuse is positive pole of the power (always-live wire).
The orange one is the ACC signal (key starting wire).
Power Cable
2.4.1.2 Obtain Connection Modes
In order to ensure correct cable connection, it is necessary to obtain the connection mode of the main
power switch through three methods.
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.
2.4.1.3 Connecting Operation
The dash camera 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.
Use a multimeter to measure the voltage on the fuse by switching to the DC voltage range.
When the multimeter detects voltage, remove the car key. If the voltage changes to 0V, it
means that the measured signal is ACC on the car.
Turn off the main power switch on the vehicle, and place key in the OFF state.
Connect the power cable according to the main power switch installation mode. See Figure
2-14 and Figure 2-15.
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