head light relay tie in..., installing foglights Options

[ScoobyDooCruiser]

I have my foglight mounted (finally; check my profile out for pics). Anyways, I've just had some questions about the electrical.

I want the fog lights to turn off when I have my headlights off, or to turn off when I turn the switch off. I am thinking I want to put a relay between the foglights and switch, that ties into the headlight circuit. Where can I find the headlight hot wire so I can put the relay in? In my manual it says something about a foglight relay, but I can't find anything but the headlight relay in my relay/fuse box.

2nd thing- Where do I get the power from? Is there some circuit that could handle the extra load of foglights, or should I splice into some wire as close to the battery as I can? Help!