Having a problem here . I'm trying to hook up my aftermarket amp to my Bose stereo, but the sticky in here has different information than what my car has. After some investigating, it seems they changed some things with the subwoofer setup starting with the 04 sedans.

Here's how my car is set up:



Here's how the 04 is set up (and how it is in the sticky):



I have 5 wires for the brown connector, the 04's and after have only 2 as you can see in the pics. I tried using the same 2 wires to send sound to the sub but I'm not getting anything. I previously had it working when tapping into the sound AFTER it leaves the Bose sub mini-amp, but that thing is unreliable and overheats sometimes so I wanted to bypass that mini-amp like how it is in the sticky.

Please help! Anyone have this working on an 03?

 

Hmm I was thinking... Should I leave the plug in to make sure everything is grounded? In the sticky it is disconnected. I'm wondering if that has anything to do with it.

 

So, over the weekend I managed to get this rewired. Instead of splicing into the woofer out, I spliced into the rear speaker outs. This allowed me to bypass the stock sub amp completely.

However, now my aftermarket sub is much lower in sound than before. I have the gain turned up all the way on the high-low converter and almost all the way on my amp... Before I couldn't even turn them half-way before it was shaking my whole car.

Is there any way to fix this, other than just replacing the stock head unit?