Thanks for the link. You have a very cool build going. Keep up the good work and updates! It's very informative. I looked through the stealth box instructions and it is pretty involved... and that's just the box install. Then there's all the wiring on top of it. Totally understand why you had a pro complete the work.
This is why I was hoping that the wiring was already in place and a only a sub/amp combo would need to be put in. It doesn't seem like that's the case though, so turn on, signal, power, and ground wiring would need to be run. However, with an amp like this:
Alpine MRV-M500 Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms at Crutchfield.com
it appears that you could just send left and right rear door speaker signals to it without a LOC and it would also turn on when it sees that signal. If true that makes the install much easier. I'm relatively new to this audio stuff so please correct me if I'm wrong.
There's got to be an easy place to ground back there, but where are people pulling power from? I was hoping I could avoid running a cable from the battery all the way to the back.