Ok, i did a my full soundsystem install like 1.5 months ago so its all still fresh in my head.
For the amp look for a 2 channel amp that puts out like 300-400w RMS in bridged mode, i could help you out with finding one, just give me a price range.
2. I dont know if you have an aftermarket headunit or not, but lets go with you dont and you have the all stock bose system.
What you need to do is get a Scoshe SL4 Line output converter, its like 20$ from crutchfield. Along with that get something called Posi wire taps.
3. Get a good wiring kit for the amp, at least 4 gauge so then in the future if you upgrade it will still be good, i can show you one i bought for like 30$ which was good quality. It also comes with a set of rca cables which you will need.
4. First run the wires and stuff from the battery to under the cargo mat storage compartment, mount the amp and all, also buy like 5-6 feet of 10 gauge speaker wire which will run from the amp to the sub connection.
5. when standing in front of your trunk, the left panel on the side will need to be removed so you can access the bose amplifer back here. Also behind this panel there is a good grounding point for the amp. You will need to tap 4 wires with the posi wire taps which will be the rear right +/- and rear left +/-. Then you will hook them up to the line output converter in slots a1, a2, a3, and a4.
Once that is done run the rca cable from the line output box which will stay next to the bose amp, to the amp for the subs.
And last thing is the remote turn on wire, run that down the drivers side of the car, ( just pry up the running board plastic things when you open the rear and front door, and i when i only had subs i had it hooked up to my windshield wiper fuse, pull the fuse out, put the wire by one of the leads and push it back in.
I actually still have my sub amp this way i never got around to changing it.
Also if you need help on what color wires you need to tap for the line output converter i will take it apart quick and find out. Also to take of the left panel where the vents are in the trunk, just take off the middle peice of plastic that runs down the center with the screws, and then start prying off the panel from there, then go to the rear left door and pry of the plastic running board peice, and pull up some of the rubber weatherstripping and start prying off slowly there.
After the first time you do it, i can take it all apart in like 30 seconds, its really easy.
If you have any other questions, just ask me, and ill probably throw up some pics within an hour or 2.
EDIT:
Here is a link to my full soundsystem install thread,
post5911003.html#p5911003
And here are pictures i took quick just for you:
amp mount location ( sorry a little dirty under here, i will be cleaning it up come warmer weather )
The part with the screws you take off first before prying out the left panel ( note these screws are like clips )
This whole long panel with the vents you pop out, bose amp is right behind vents. you will also be hiding the spool of rca cable behind here and probably finding a ground point, and hiding the schosche converter box
My subs:
The bottom floor kickpanel peice i was talking about, pry this off, then pull away some of the weather stripping to the right, and pry off the long left panel
The remote turn on wire running to my wiper fuse ( this is behind the drivers coinbox )
My headunit:
My amp for all my upgraded door speakers and 14 gauge speaker wire i ran to them ( have yet to do some cable management here )
My power wires running and fuses ( flash makes the engine bay look dirtier than it is )
And thats about all you need to know.
Hope it helps you
