H4 Low-Beam Xenon/High-Beam Halogen, 8000K, 2000 4runner, I love them, they look great, but sometimes mine will flicker when I start the car and only one lights up, but I turn my brights on & off & they'll both fire up without flicker… My only discrepency is that I also bought, and installed the anti-flicker module, so that was supposed to alliviate the lights from doing this, maybe it would have been worse if I didn't install the anti-flicker, I will question this and update my review. OtherwisSee full review