I am assuming that you already have one of the above.
Now do you know when you take it apart to put the batteries in, can you see a coiled spring in the part that has the push button and laser?
if so then the next step will be simple
if you got some spare cash then getting two of these will make putting the batteries and switches together very simple.
UK link
USA link
if there is a coiled spring or a silver plate then all you would have to do is wrap the red wire from the battery holder on to this part, or if you have one (Soldering iron) solder the red wire to the coil or silver plate.
the black wire would then be solder to the case of the laser.
even if you do not use the batteries boxes the colored wires would still need to go to the same places.
The switch you would need, would have to be double poled, this means that there would be four wire connectors on the back of the switch. o = connector on the switch
laser#1 $____red wire #1__________o switch#1 o__red wire #2_______$ battery box. #1(red wires)
laser#2 $____red wire #3__________o switch#1 o___red wire #4______$ battery box. #2 (red wires)
now some of this will make sense, if I remeber to check back will help a bit more on the parts that you might not get.
Dark Physics makes any hot drink go cold.
