The first question we have to ask is: according to the instructions contained, whether you properly connect the kit? We always recommend doing double operation, just to make sure everything is connected (wire harness connections). In general, this is a loosely connected or connected to the wrong things LED light does not work. Considering all the correct wiring connection, the next question (most important): the step-down transformer is connected correctly? If the voltage reducer is not correctly connected due to overvoltage, the light may have been blown out. You need to check your cart that the voltage electrical accessories. Because all of the operation in 12V, and the speed reducer the higher voltage is reduced to 12V. so you should see a voltage not exceeding 12V reduced. If you see any higher than the voltage of 12V, you may step down transformer that not installed correctly, now light bulbs will blink (usually incorrect user installation will void all warranties). If you see that voltage does not exceed 12V, then your light may malfunction, in this case, you need to buy a new light and take care of it.