i am about to install a US Acoustic USB2100 (100w x 2 RMS) to my front POLK components. can i jsut run the output wire from the amp to the OEM wire harness or should i run wires from the amp straight to the crossover. I would rather go to my wire harness so i dont have to open up my door. But if i lose any sound quality from the thin wires already in the car i will open the door up.

what do u guys think i should do?

 

you will lose alot of sound quality by only using those 10 threads of wire in the stock harness. Don't be lazy, do it right.

 

you lose some power, but it is much easier to do than to tear out your door panels. but i really do recommend you just run wires to your doors, some 12-14 gauge would be nice...