My friend is lookin to install a subwoofer system in his 03 accord coupe (K24, auto). The head unit is built into the dash, so im not sure how to get the mono sub out/remote turn on from the head to the dash. Also, any info bout getting power through the firewall and to the back would be much appreciated. BTW, the system is a MTX thunder 8000 and a rockford fosgate 401s

 

you might wanna post this in the audio forum...you will more than likely get better results posting it there.