really!?

but the question remains, how do i get that power? just tap into a wire or add-a-circuit or????
i was thinking over night, and got a little confused about the grounding, and i grounding the LED to the grounding prong on the relay? or am i putting a wire from the grounding prong to lets say teh negetive of the battery? or the LED directly to the neg. battery? to ground, im thinking of tapping into the grounding wire i used for the indp. fog lights, which is a ring terminal thats screwed into the firewall. how do i go about grounding and wiring the neg./grounding(?) of the LED?

