Here’s the brain box of the system. Check it out! It is fully sealed! So even you guys with no tops don’t have to worry about killing this thing. It has short speaker leads and is intended to install behind the head unit. The short wires are a good idea because it will keep interference down. Even though the kit can go through all four speakers, I only used the front two in this install because the rear speakers are behind the seats and kind of crappy. Of course, I soldered the connections and I then stuffed everything back into the dash. The box measures 2x3x7⁄8 inches, so it fit even in this cramped dash.