Sup guys, I'm trying to install my under dash LED lights and I have my ground all wired up and everything but I want my lights to work without a switch. Like to where they only turn on with the headlights... What wire would I splice into to get power only when my headlights are on??

 

why would you not just go dome lights wire

 

Because I love the look of it and like them on all the time. I finally got an idea. I spliced it in with my light switch wire on the back of my pioneer head unit...