Lighting switch terminal

I just recived my Pioneer DEH-P6500 in the mail today and now have all of my wires situated out on my install tomarrow, except the Orange and white wire (on the pioneer unit) that says to tap into the stock Lighting switch terminal, and I need to know what I will be tapping into and, what color the stock wire for it is.

Thank you :up:

Never mind, found it-