I bought my SilverStar Ultras at Advanced Auto, both Low and High Beam bulbs. As for the 194 bulbs, I believe I got those at either PepBoys, Advanced Auto, or Auto Zone. I want to say PepBoys though, remember they are just regular red bulbs not LED or anything. I was on a mission that day and went to all 3 stores looking for red bulbs. So that would be where I would start.