When the door is opened, the red light flashes to avoid accidental collision Make your car more Individuality Product Name:Streamer door light Voltage: 12V Material: 2835 wick Length: 1.2M Light color: white + red Applicable models: universal Installation tutorial 1. Tear the adhesive around the edge of the door to fix it 2. Pry open the gap at the bottom of the door 3. Put in the drive to hide, pull the wire to the door light 4. The red line is connected to the anode of the door Black wire to negative 5. The installation is complete Package included: 1 piece or 2 pieces or 4 pieces according to your choose,1 piece for one door,we recommend you choose 2 pieces for front door,or 4 pieces for 4 car door.