[Budule]

The converter is marked with two input leads and two out put leads. The input leads (red & black) go to your golf cart batteries. The black lead goes to the negative terminal of the last battery in your 48v or 36v string, and the red lead goes to the pos. terminal of the first battery in the string. The two out-put leads (yellow and black) go to your lights or other accessories on your golf cart. The output should 12V if you use a multi meter and read the voltage across the yellow and black leads. The black leads are the negative side of what ever you are attaching to the 12V system. Unlike a car, the frame or other metal parts of the cart can't be used for grounding, since the negative side of your battery string is not connected to the frame and should NOT be connected to the frame. This is a closed system, unlike what you have on a car.