2008 Silverado horn wire location

[Benedlr]

I need to locate the + wire that activates the drivers side horn. I'm using it to power a relay. Can't find the harness that runs to it without removing the front end. Any help in identifying color and location in the harness is appreciated.

[Jsdirt]

Easiest thing to do is just grab it from where it currently plugs into the horn now. Use that power to control the relay, and run separate, dedicated power wires to the horn.