Hello Floorin04, If you a just going to run lights and a lighter socket you do not have to install an additional fuse block but you should install a fuse in the + (hot) line as close to the battery as possible. The size of the fuse is determined by the size (gauge) of the wire. A # 12 wire 8 to 10 feet long may carry a load of 20 amps where as a # 14 wire of that length may carry only 15 amps. As the length of the wire increases the load capacity goes down. The neg. wire should be connected directly to the battery neg. post. It should be no smaller gauge than the pos. (+) wire but does not require a fuse. You should never use the buggie frame for a ground on an electric cart as this can cause numerous problems. Since you have your wires run from the aux. battery to your lighter socket and light switch you need only to connect the ground (neg.) to the metal case or core of the socket. Most automotive lighter sockets provide a "tab" to slide a 1/4" flag type terminal. If not you will need to solder a wire to the case. If your lighter has 2 wires just connect the red (most often) to pos. and the black to neg. For the lights run a wire from the other side of your switch to the "hot" side of the lights. Run a wire from the other side of the lights to the same ground as you used for the lighter. This should get your lights working, just remember to protect your wiring from damage where ever it is below the buggie or goes thru any hole in the body or frame using something like plastic "split-loom" available from any auto parts store. Let me know if you need any additional help. Car53...
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