AUx lighting on a 2005 f150

[Bubbles]

I have 4 110 watt lights I wanna hook up on my truck.

Actually they are all wired up, I used 2 relays with one switch to turn on both relays.

Only question is when do most people tap into power for the switch, I want a switched power location so they can not be left on with out the key on.

I use to tap into a switched fuse in the fuse box on older trucks, but from what I read most people tap into the headlight wire.

thanks.