Have been reading about 9005/6 swap mods. Got a bit excited to try it out until I discovered that the 99 Camry I got a few weeks ago uses 9003. I just replaced them with Silverstars, better than the stock but still wish I can make brighter. Any ideas?
The problem is that the 9003 (H4) bulbs are dual filament. If you somehow manage to mod a 9005 or a 9006 you will lose your highbeams. Both those single filament bulbs have a 90 degree bend in them whereas the 9003 is straight. I think the dual filament bulbs really suck, even with silverstars. I dont know from first hand experience but I have heard of people beefing up their ground wires (a.k.a. hyper grounds) and reporting brighter headlights. Maybe replacing those and the wires feeding power to the lights will make em a little brighter?