something aint right there with that 2 channel amp... you usually can't hook up a 2ch. amp to a subwoofer, and to your front door tweeters (i think thats what Im seeing)... i can't figure out exactly what is goin on there, but it's wrong
you'd have to find an amp that had 1 channel bridged MONO, and the other stereo...and even with the 2nd channel you'd have to wire up both tweeters to it, and then you would lose your fader option on the radio, and THEN you would be amping only 2 of your rear tweeters, and not the front....so yes, you have a mess