This listing features one pair ( 2 pieces) H4/9003/HB2 DRL anti-flickering relay harness to avoid the DRL / daytime running light flickering on-off after you install the led bulbs for Lexus or Toyota vehicles at below situations, due to led bulbs draw much less current than stock lamp, directly plug and play, easy installation.To get more news about H4 LED headlights, you can visit iengniek official website.

1.) The LEDs light up intermittently or flicker in the DRL mode.
2.) Both LEDs light up full power when the high beam is on.
H4 HB2 9003 LED bulbs are used for replacing stock halogen, HID or defective dual hi/low beam conversion kits headlight, daytime running light (DRL), fog lights for better vision and safer driving.

Cross reference number: HB2, H4, 9003, H4LL, 9003LL, HB2LL, etc.

Optional colors: 6000K~6500K xenon white/3000K Amber Yellow/8000K Ice Blue