Key On Hot Wire

Can somebody tell me which wire is a good key on power wire at the under hood harness against the fire wall drivers side or under dash so I dont have to probe a bunch of wires with my test light ?? I hot wired my fog lights cause I didnt want probe or cut any wires but I keep leaving them on . The newness has worn off a bit now and I am willing to cut a wire to get the power but I definately am no fan of probing more than I have to !!please help I need the color code of the correct wire and I wanna be able to turn them on whenever key is on headlights on or not !

 

You could use a fuse tap as outlined in my light-wiring sticky...

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