Originally Posted by BGrail25
Do you mean one of those button switches that you press down? I guess any switch will work, all it needs to do is stop the circuit. Anyways, usually all laser pointers have the battery compartment inside the device, which is where you would need to get into. One wire needs to be connected to the spring, where the other is attached to the bare metal at the end, with the threads. The wire from the spring goes to the right side of the batteries, the batteries go to the switch, and the switch goes to the metal. Pretty simple. I guess.
Ya, the button turns things on or off depending on what you are using it for...in this case, I want it to turn it on.