Halogen to HID Headlights

I would rather use LED bulbs than HIDs. Directly fit into your factory halogen setting.

 

I retrofitted HID projectors into my halogen housings. This is all aftermarket, not native Prius HID, which are a reflector based system. I went with projectors, which is how stock HID lights are set up today. LED lights are also set up with projectors, but they are very different from HID projectors. I would emphatically recommend AGAINST installing LED or HID bulbs directly into your existing halogen housings. This will create hazardous glare to the oncoming traffic. It is not a good solution at all regardless of what sellers of such systems say. My HID projectors provide a hard cutoff line which I have adjusted to the level that is below most windshields. With this setup my glare towards oncoming traffic is actually much less than with stock halogens that have no cutoff at all and can be very annoying while providing sub-par lighting for the driver. I realize that my setup lacks leveling, but I have tested it with a full load of 4 adults and one child in the car and the cutoff line is well within reasonable range and no one has flashed me while on dark roads yet with or without load. The light ahead of me is not ridiculously bright, but it s of good quality and the pattern is smooth and wide. I recommend going this way. It cost me $150 and some handy work. I think it is probably cheaper and easier than going the stock Toyota HID route.