Alero Main Electrical System Wiring

[Jmalbright]

Hello,
I am looking to do what is known in the car audio world as a "big three" electrical system upgrade on my 2004 Alero with a 3400 engine. This upgrade involves replacing/adding heavier gauge wires from (1) Alternator positive to the battery positive, (2) Battery negative to chassis, and (3) Engine ground to chassis. More about this upgrade can be found here: http://www.the12volt.com/installbay/...TID=73496&PN=1


Anyway, I was wondering if anyone had an Alero engine wiring diagram so I could see exactly how involved this process is going to be. The one I am most concerned about is (3) because I have no idea where this wire originates and ends. I'm also not 100% sure on the route of (1) as it seems to weave in and out of the engine. Lastly, it would be nice to know exactly where (2) connects to the chassis and how difficult this area will be to access.