Installed 35W HIDs in 06 ES330 low beams and I notice that the bulbs sometimes flicker when I turn them on, and they keep flickering. Sometimes one doesn't even come on at all! When I got the kit, there were 2 sets of metal pieces (1 for each bulb) in the kit that I put directly into the sockets for the OEM bulbs, and that's all that came. I was just wondering how to stop the flickering and if it's safe to mount the ballasts onto the strap of the battery? Thanks!

Eric