I installed a sub and amp in my buddy's 08 XL7 but I couldn't find a good place to get through the firewall for the red power wire. Usually there should be grommets that other wires go through under there but I didn't see any. And I didn't really want to take apart the dash because I didn't want to break any of the panels. They are really hard to get off because of the hidden screws on every panel. Any ideas besides drilling? Pictures would be really nice. Thanks.