For each lamp, you just have to find a different controller. It seems simple, but even here some people make a mistake. There are people who don't realize that controllers come in different wattages. Others do not consider the voltage class as explained above. At the same time, the size of the device, does not always play a role. That is, some think that the bigger it is, the more powerful it is. However, it often happens that in the same design and housing, there are different parameters and power. When I bought a backlight from vont.com, I made the same mistake! Be careful not to lose your money and time!