This one shows you how to install a fuse in the circuit.
This one shows you how to wire a circuit to run two flashes from one battery.
How to wire a circuit in Parallel.
In a parallel circuit, each component has its own direct path to both the negative (-) and positive (+) sides of the circuit. A simple schematic of a parallel circuit is shown below. In actually wiring the LED lights from Berkeley Point, as long as the red leads from the lights are connected to a wire that goes directly to the positive (+) side of the power supply and the black leads are connected to a wire that goes directly to the negative (-) side, you have wired the lights in parallel. If you follow the wire path back from a light to the power supply, it can "T" to other lights but should not go through any other lights. If your feed wire is similar to the Belden wires provided by Berkeley Point in so far as they consist of a red and black wire. In a parallel circuit, you will never have a black wire connected to a red wire (contrasted with example of series circuit shown above). Further, as long as you can follow a path from the red wire of a light back to the positive (+) side of the power supply through red wires and the same through black to the negative (-) side, you have wired in parallel. A group of many lights may have all their red leads connected together with one red (+) feed wire and all their black leads connected together with one black (-) feed wire.