haha, sorry dude i let my hatred for sony car audio be known everywhere i go i cant help it.
hmm, maybe its either
a) faulty h/u
B) bad wiring (but u just re-wired!)
c) the cars electrics are shonky, need to be re-wired
GTR-80Y has a problem where his speakers only work on one side sometimes, and then sometimes one side cuts out u can hardly hear the music, and then when u stomps on the brakes the stereo turns off altogether and you need to turn the car off and on again for it to work again
R33 GTSt's have shonky wiring me thinks.