What is the wiring method for daytime running lights?
2 Answers
The wiring method for daytime running lights is as follows: 1. Locate the ACC position in the car, usually found on the left side at the bottom of the steering wheel; 2. Secure the daytime running lights in the appropriate position, then proceed with wiring; 3. Connect the black wire to ground or the negative terminal of the battery, the red wire to the ACC relay, the two white wires to the headlight fuse, and the two yellow wires (or one yellow and one green) to the positive terminal of the turn signal; 4. After installing the wiring harness, recheck for any loose connections. Daytime running lights are designed to make the vehicle more visible to others during the day and are installed on both sides of the front end. Their purpose is not to help the driver see the road better but to alert others that a vehicle is approaching.
The wiring method for daytime running lights (DRLs) is actually quite simple, the key is to locate the correct power source. Having frequently worked on automotive electrical systems, I prefer connecting to the ACC line or ignition switch power supply, which automatically turns the lights on when the engine starts, saving power and ensuring safety. The first step is to open the fuse box or use a multimeter to test and locate the ACC-labeled fuse slot (usually red). Then, strip the power wire of the DRLs, connect it properly using a wiring terminal or crimp connector, and insulate the connection with heat shrink tubing or electrical tape. Don't forget to add a 5A or 10A fuse for protection to prevent short circuits and circuit damage. Finally, test the setup: the lights should turn on when the key is turned to the ACC position. Avoid connecting directly to the battery, as this will drain the battery when parked. Especially for new cars that may have factory-installed connectors, checking the manual is the safest approach. DRLs are highly effective for improving visibility, but wiring them yourself requires patience and having all the necessary tools to prevent mistakes.
