Where to Connect the ACC Wire for Daytime Running Lights?

[MadelynRose]

The ACC wire for daytime running lights can be connected to the middle terminal of the fuel pump relay in the engine compartment fuse box. More information about daytime running lights is as follows: 1. Daytime running lights, also known as daytime running lamps, are installed on both sides of the front end to signal the presence of the vehicle during the day. 2. Daytime running lights are not illumination lights but signal lights. Their purpose is to make the vehicle more noticeable during daytime driving. 3. The goal of daytime running lights is to enhance traffic safety. Therefore, many countries have established relevant standards for daytime running lights in recent years to ensure that the installed lights effectively contribute to safety.

[LaHazel]

The ACC wire for daytime running lights is generally connected to the fuse position in the car's fuse box specifically marked as ACC or accessory. This is how I did it when using an installation kit. The ACC wire only receives power when the ignition switch is turned to ACC or ON, allowing the daytime running lights to automatically illuminate when the vehicle starts, enhancing daytime driving safety. The operation is quite simple: First, remove the fuse box cover under the glove compartment, then use a test pen or multimeter to test each fuse one by one. The fuse that lights up when the key is turned is confirmed as the ACC point. Then, insert a fuse tap and securely connect the positive wire of the light to it. Never randomly connect it to the battery positive terminal or engine wires, as this could cause a short circuit, fire, or drain the battery. During my DIY, I once encountered loose wiring that caused the lights to malfunction, but switching to heat shrink tubing for sealing fixed the issue. If you're unsure, I recommend following the vehicle manual or video tutorials step by step—don't aim for perfection on the first try; safety comes first. After the modification, I felt more visible on the road with fewer accidents, but don't rely solely on the lights—regular maintenance of the headlight system is still essential.

[LeDaisy]

The ACC connection point for daytime running lights is usually at a specific ACC terminal in the fuse box. I've seen many car owners connect it incorrectly, leading to issues. ACC stands for accessory power, which supplies electricity only when the vehicle is partially started, making it perfect for daytime running lights to operate. In practice, you need to locate the ACC fuse in the fuse box—for example, in Volkswagen models, it's typically under the driver's seat—then use a dedicated fuse tap to clamp and connect the wire. This avoids the risks of direct soldering or wire stripping. If the ACC point is hard to find, check the diagram on the fuse box cover for clear labeling. During installation, ensure the current does not exceed the load, and use 14-16 gauge wires for stability. Remember to test once whether the lights turn on and off normally with the vehicle's ignition; otherwise, it may cause a short circuit or burn out the module. I recommend taking some time to check forum posts for your specific car model to reference real-life examples before blindly proceeding. Once completed, the daytime running lights will function reliably, reducing collision risks and saving power. Regularly clean the dust off the light covers to maintain brightness—don't wait for a malfunction to fix it.

[DelGia]

From a safety perspective, the ACC wire of the daytime running lights must be connected to the correct ACC power source to avoid serious accidents. The ACC has power when the ignition switch is ON, making it an ideal connection point. It is recommended to locate the ACC-labeled fuse in the fuse box, confirm it with a testing tool, and then proceed with the wiring. Randomly connecting to the positive battery terminal or other wires may cause short circuits, fires, or constant illumination that drains the battery, which is extremely dangerous. I have handled cases where incorrect wiring nearly caused a vehicle fire due to circuit failure. During installation, use insulating tape and screws to secure the wire ends to prevent loosening, and test everything thoroughly before hitting the road. For professional advice, consult a mechanic at an auto repair shop to ensure everything is foolproof—the cost is minimal and saves headaches. After all, daytime running lights are essential for safety, and proper installation enhances visibility and prevents collisions, so don’t take it lightly. Regularly check the light’s condition to identify and fix issues early.