Just wondering how I would go about wiring a sub and amp to my stock head unit. Where would the rca cable and remote wire run. Its being wired for a 1996 civic lx.

 

Line out converter tapped off of rear speakers. Remote wire to accessory wire behind radio, accessory output on fusebox, or accessory wire ignition harness.

Why not replace the deck? Sounds ten times better and gives you more control. Stock deck with a LOC sounds like the sub cone is covered in mud.

 

Definitely get a new car deck. It will make a difference. Less work and better lows .