Originally Posted by Ludemandan
Power to the battery: I'd like to route it so it hugs the chassis. Then it's out of the way and I can screw my fuse holder to the chassis. Is it a problem to have the + and - power channels right up against each other for several feet?
Your ground wire should only be a foot or two long going from your amp to an unpainted metal part of the chassis. If you can find an existing bolt somewhere near the amp, remove it, clean and sand away the paint and then bolt down the ground wire in that spot. I've had no noticeable interference that way - just be extra sure to have the cleanest and most secure ground possible.
The positive wire goes one way to the battery in my car and the negative ground goes the opposite direction to the grounding point - it's better IMO to keep them apart but if you run them the same direction, keep your distance between the amp and grounding point as short as possible, ideally like 1-2 feet. There's really no need to run them the same way though since they're not going the same place.