Especially directed to 4th Gen owners:

Is there a site or some other source where I can find good detailed instructions on installing an amp myself? The main thing that's got me worried is the wiring, from the battery to the unit and wiring the two door speakers.

I haven't purchased my amp yet, but soon, very soon, she'll be mine:

 

http://www.crutchfieldadvisor.com/le...all_steps.html

that may help ya out

 

Try asking the gurus over at www.caraudioforum.com
Im sure you'll find A LOT of great info on that site.