I was wondering is there's a write up on how to install a sound system when using the factory headunit.

 

Which headunit? If you have the rockford amp look here: https://www.evolutionm.net/forums/ev...d-oem-amp.html

 

Non navi and didn't come with the oem amp. I have a 09 ra and the oem headunit is part of the center vents

 

buy a harness b uy the scosche dash kit buy what ever HU you want and hook it up done. the lancers/ ralliarts/ evos without the rockford fosgate are the EASIEST cars to install an aftermarket headunit into.


specifically for your ? are you asking how to install subs to the stock headunit ? if so theres a how to written over a year ago in the 08+ lancer section. the 08+ lancer section has LOTS of useful information for RA owners.