void warranty

I am the process of putting in a sub on my 05 package3. This site is amazing with all the install info (thanks sparky). Who needs a professional? As I was momentarily unhooking the negative wire in the back battery (zeros clock and affects dome lights) and running wires around the mid car batteries I began wondering if this could affect my warranty. I also plan on upgrading the speakers and putting in the VAIS unit for sat and ipod.

Does anyone have any history on this? Where is the line on this?