alright... i got JVC KD-G320, Infinity REF7541 amp on 8gauge wire, Eclipse XA1000 on 4gauge wire, speakers are RF punch 6x8 and alpine type-s 6x9 - speaker wire im not sure about the gauge but its quite thick so are the RCAs (and they are seperate from power cables), only one speaker wire from the front one runs with power cbls.

It has to be the grounding since after i fixed ground on the deck it became much better