What is the method for connecting a dash cam with three wires?

[OPaisley]

The method for connecting a dash cam with three wires is: 1. The positive wire is red and should be connected to ACC; 2. The negative wire is black and should be grounded; 3. The long yellow wire should be connected to the car battery or the constant power positive terminal. The functions of a dash cam include: 1. Preventing fraud attempts; 2. Providing evidence in case of traffic accidents; 3. Recording driving experiences; 4. Navigation. The usage method of a dash cam is: 1. Press and hold the power button to turn the dash cam on or off; 2. After turning on, the dash cam will automatically enter recording mode, and a memory card must be inserted before use; 3. After turning on the dash cam, press the mode control button to select the photo mode, then press the OK button to take a photo.

[StephenLee]

Last time I installed a dash cam myself, I used the most basic three-wire connection method. Those three wires were red, yellow, and black, corresponding to constant power, ACC, and ground. First, I secured the dash cam in position to ensure it didn't obstruct the view. Then, I used a fuse tap or wire stripper to prepare the wire ends—connecting the red wire to the B+ in the fuse box or directly to the positive terminal of the battery, the yellow wire to the ACC fuse, and the black wire to a metal part of the car body, such as a screw, as the ground. The whole process took about 30 minutes, but the key was to use a multimeter to test if the connections were secure, ensuring the wires didn't touch other metal parts and cause a short circuit. After installation, I noticed the dash cam automatically turned on when starting the car and delayed shutdown after turning off the engine, preventing battery drain. I recommend beginners start with a cigarette lighter adapter for practice and switch to direct wiring once they're more experienced—it's safer and more durable. For daily use, occasionally check the connections for looseness or oxidation to ensure uninterrupted recording.

[OCaroline]

Connecting a dash cam with three wires is actually quite straightforward. I learned this technique from an auto electrician. First, prepare the tools: wire strippers and a fuse tap. Connect the red wire to the constant power source by using an empty fuse slot in the fuse box. The yellow wire goes to ACC (accessory), which represents the ignition switch for power-on supply. The black wire is the negative ground and should be clamped onto a metal part of the car body. During wiring, ensure the cable harness stays away from high-temperature components like the engine area to prevent melting. If you can't locate the ACC, use a test light or multimeter to identify the correct position in the fuse box. After installation and testing, the dash cam can maintain standby mode when parked, but avoid prolonged constant power connection to prevent battery drain. An extra tip: adding an in-line fuse protector can prevent circuit overload and extend the device's lifespan. Don't worry too much about mistakes—just follow the steps carefully, and you'll get the hang of it after a few attempts.

[StEdward]

I installed the dashcam's three wires myself to save money while ensuring quality. The red wire connects to the battery's positive terminal for continuous power supply, the yellow wire links to the ACC fuse to ensure operation only when the vehicle starts, and the black wire grounds to a body bolt. The whole process took just 20 minutes in the parking lot, with the key being to choose secure attachment points to prevent loosening. For example, avoid grounding to non-metal areas as it affects performance. After installation, check if the dashcam has an energy-saving mode when the engine is off to prevent battery drain. I also added waterproof tape around the connections for rainy days. It's simple and practical, ideal for time-pressed car owners.