Ill find a pic of my amp, its behind my passenger seat. Its an MTX 3401 400w d block. This is a good 400w setup, thats pretty lightweight. Im taking it out though for my new cage.

Oh yeah, when I installed it, I ran the wiring under the bins, carpeting, and ran the power line through the passenger fender. The only time you can see any wiring is right behind the enclosure on the terminals. There's a crappy picture where you can see the blue power line.