Hey, for anyone that has done a sub drop in with a new amp... I need some help. The installers wired the amp to the two front channels and I wanted it to be wired to the sub channel. The car is 1/2 ripped apart now and I have access to the stock amp. Which wire should I tap from... should I even bother changing it? The only reason I want to is sometimes I fade the music back, and then the sub gets weeker.

 

Pics from dub's install
Looks like he also tapped from the front speakers... but why?

 

Pic before tapping