1. Please confirm the voltage first. If the voltage of a product is 12V-24V, then you must use a professional LED voltage converter. 2. Please check the specifications of the product carefully before ordering to insure a proper fit. 3. Do not disassemble any bulbs by yourself. 4. Be sure to cut the power off before beginning installation to avoid personal injury.
These bolbs work very well. They were almost too large to fir in my hockey puck style lights, but I was able to get them in, and they work as advertised. By the way, they do work on 12V DC, even though they are labelled AC. I am very happy with these. Although the light is whiter than the 10W halogen I am replacing (which I expected), they are also much brighter.