Post by
radigan »
https://forums.nicoclub.com/radigan-u52019.html
Tue Nov 27, 2012 9:34 am
This is what I had to do because I had base audio as well. To keep factory head unit, you need something like a JL cleansweep. This is what I used before I changed over to an audison bit one. cleansweep is the cheaper option. This will allow you to keep factory head unit but gives the option to add external sub/amp setup.