While many kinds of HID bulbs (or high-intensity discharge bulbs) are available, there is a difference between 35w and 55 ballasts. Ballasts are small units that operate and house the electrical arc in an HID bulb that allow a car’s headlights to work.
The most critical point to consider is that 35W is legal in most states, while 55W may not be. That should factor into your decision because you may only be allowed to use one.
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