Originally Posted by cuda2k
Need a little assistance guys. My battery should be arriving tomorrow and am in need of a check on my wiring setup for these lights. I've purchased a single ON/OFF/ON toggle switch to control my dual 20W lights. Thing is I want the setup to be ONE LIGHT/OFF/BOTH LIGHTS. Its been a while since I've done my electro-physics class with batteries and such so I need a check on this wiring diagram.
Some how I think this is wrong...
edit: the more I look at this, yes, I'm pretty sure this won't work, and not sure if there's a way to make it work without additional circutry.

Anyone know where I can get a small push on/off switch, perhaps about 1/2" round or so, body no more than about 3/4", and
Waterproof?
My system won't let me see your diagram. I sketched out what your layout might have been and added an adequately sized one way diode at the critical point in the circuit. Now when you hit the first ON juice will not flow to the second bulb. At the other ON both lamps light up. As Jeff-O says the proper switch can solve the problem.