Here's how I have it figured out....

I have a 5 channel amplifier that will be able to sum the 1/2 and 3/4 channels in order to give me the subwoofer output. Thus, I only need a 4 channel LOC.

I am going to run new speaker wire to each speaker from the amp directly. I'll cut the harness coming from the head unit, and splice the LF/LR and RF/RR positives and negatives into my 4 channel LOC. The RCAs will run back to the amp. Question is, should I place my LOC far from the Bose head unit, or close to it? Last time I did this, I placed it close by.

As I understand, I can pretty much rip out the old Bose amplifiers. I am going to take the one off of the rear deck, as well as removing the ones in the doors.

Give me an idea if this makes sense... I know I can fabricate the speaker mounts if I need to, and the subwoofer box might be a project for me to build, or I may just buy the 4080. Thanks for any insight!

 

You got the idea. Most LOCs recommend installing close to the HU, but this is a PITA in the 8 and just isn't needed. Splice the wires at the input to the main amp as described in numerous posts and you will be golden.

 

I have a pretty small LOC.... I can probably fit it right by the HU. Any reason not to, if I can?

 

Nope, I just personally wouldn't want to pull the HU if I didn't need to.

 

Okay... so how far do the wires run back down the car? I figured that the front speakers will only run to the front doors, and the other two speakers will run down the back, so how can I use the LOC to pick up the two channels that run in the front?

 

All signals run from the HU through the main amp in the rear. Look here & here for the correct Bose diagrams to make it more clear.