Ok gp, I bought the H7 trs kit for both high and low beams several years ago. That is the kit without the wiring harness and relays. Never have I had any problems with the lights flickering. I started out with the el-cheapo ebay kits and learned my lesson quickly. The ebay kits are a waste of time and money. Use a sharp set of side cutters to notch the bulbs for indexing the low beam bulbs in the housing.