Install headlights controlled by switch

I want to install a second set of headlights below the first set but I want to be able to control them via a toggle switch in the auxiliary ports in the picture attached. Can anyone explain how i'd connect these headlights to the battery power? I can manage how to put a switch in series with the lights. And maybe someone could recommend a good website to purchase the headlights?

 

There's wiring info for fog/aux lights in the cheap/free mods section.

http://www.tacomaworld.com/forum/technical-chat/6525-diy-wiring-after-market-lights.html

 

thanks

 

Check out my electrical basics thread too (link in sig)