Take your time and depending on the guage wire things could get tight under the door sills. I did not drill a hole in the plastic between the back seat and trunk. The spare tire cover fits tight and unless you fold the back seats down you'd never see the wires going over the top and into the spare tire well. They're in loom so it doesnt look bad at all but you'd see them with the back seats down. I've never folded the back seats down on any of my cars come to think of it but anyhow. Mines a lease so I didn't want to do anything I couldn't easily undo.