firewall
 

Hey guys.. i am installing an amp sub in my cousins 2000 accord sedan 4cyl, and was wondering if you guys knew a place where i can take the power wire through the firewall... thanks in advance for your help..

Look in the engine bay to find a pass. There are a few..

i hope you are running through the passenger side, if so look where one the wire harnesses goes inside, you will find enough room to run 0 gauge wire, just make sure you seal it up!