Using all stock wiring. The factory front speakers doesn't do highs either, that's why there is a tweeter in the door. The speaker I replaced them with also came out a box with a stand alone tweeter so it was an even swap sound wise other then being a little louder since it's a little bigger. When I have time, I'll go pull my door panel off so you can see exactly what I mean, it was a pretty simple and effective way.