Car DRL Controller Relay Harness Auto on Off Switch Dimmer 12-18V 5A Waterproof Smart Daytime Running Light Module Auto Parts

✅ 【Intelligent Automatic Control】: Automatically turns DRLs on when the engine starts (voltage >13V) and smartly dims them when you switch on your headlights. The lights will turn off with a 15-second delay after you shut off the car.

✅ 【Enhanced Driving Safety】: Greatly improves your car's visibility to other drivers in daytime conditions, reducing the risk of accidents. The dimming feature prevents glare for oncoming traffic at night.
✅ 【Durable & Weatherproof Design】: Made from high-quality ABS material. The fully sealed, waterproof, and dustproof construction ensures flawless performance in any weather.
✅ 【Universal Compatibility & Easy Install】: Designed to work with most 12V-18V vehicles. The simple wiring setup allows for a quick and easy installation without needing special tools.

• Material: ABS
• Working Voltage: 12-18V DC
• Working Current: 5A
• Dimensions: 4.7 x 2.6 x 1.5 cm (1.85 x 1.02 x 0.59 in)
• Features: Compact, Waterproof, Smart Delay
• Quantity: 1 x Car DRL Controller Module

✅  Wiring Method:

1. First, connect the positive poles of the left and right DRLs together, and the negative poles together.
2. Connect the red and black wires of the controller's input end (with a fuse) to the positive and negative poles of the battery respectively; connect the red and black wires of the output end to the positive and negative poles of the DRLs respectively.
3. Connect the yellow wire of the controller to the positive pole of the headlight (or reading light) switch. When the headlight (or reading light) is turned on, the brightness of the DRL will be halved (dimmed) to achieve the dimming function. (The yellow wire can be left unconnected if this function is not needed, which will not affect other functions.)

✅  Warm Reminder:

• It is normal for the DRL to stay on for about 15 seconds and then turn off after being connected to the battery (to realize the delay function). After that, the vehicle needs to be started, and the DRL will start working only when the voltage reaches 13V or higher.