What is the use of a voltage reducer cable?

[DeDante]

The function of a voltage reducer cable is to lower the voltage, converting the car's 12V voltage to 5V output for use by the dash cam. The dash cam is an indispensable in-car device for automobiles. There are various methods for powering and installing a dash cam, but the most commonly chosen method is to run a concealed wire to the fuse box, which effectively hides the power cable and maintains the car's interior aesthetics. Since the fuse box voltage is 12V, a voltage reducer cable is required. The wiring method for the voltage reducer cable is as follows: 1. First, install the dash cam in a suitable position and secure it firmly; 2. Connect the voltage reducer cable, run the concealed wire along the A-pillar to the door frame seal, and tuck the wire until it reaches near the fuse box; 3. Open the fuse box, locate the ACC socket, connect the red wire of the voltage reducer cable to ACC, and ground the black wire by screwing it onto the fuse box screw.