[OutbackJon]

You're going to have to pull the front bumper. There just isn't any other realistic way to get to the horns. It isn't difficult, or even all that time consuming. It's a bunch of pop-clips and a little bit of pulling.

I've been running the Hella Sharptones for almost two years now on the stock wiring in my 2017. Only one issue I had turned out to be a bad chassis ground caused by an incompetent body shop performing repairs. I used a Grimmspeed BroTie to mount the horns and extended the wire from the stock second horn location in the side of the bumper to reach the second horn mounted at the front.

I use my horn a lot (there's a new traffic circle in the area and people haven't figured out that you don't have to YIELD TO A COMPLETE STOP when there is NO TRAFFIC in the circle) and it hasn't ever blown the OEM fuse, so i don't think it's going to cause an issue to use the stock wiring.