i have a z24 cavalier and i was wondering how i wire in my underbody lights

well, how many lights are you hooking up?
just for example, lets say your using the traditional 4 light system (2x36" & 2x48"). you would first mount the lights where you desire using included hardware. you would then connect the wires from all of the lights to the transformer supplied with the kit. then connect the transformer to a toggle switch which should be mounted somewhere that can easily be reached, then connect the switch to the spade connection in your fuse box(the one under the hood, sorry, i dunno what its called) and thats it..
make sure you follow the instructions carefully especially when it comes to mounting the lights, because if your lights hit the road, your screwed.

and PLEASE have the light bars well hidden. Not only is it illegal in most places for them to show but its just ugly. Underbody means hidden under body!! I cringe every time I see someone with neons and you see the bar like they duct taped it to the first thing it hit.