How can I add a sub into my factory system?

There are many ways to add better bass to your factory system. Using products like The Epicenter Plus, DQL-8, LC7 or an LC6i, you can keep your factory head unit and controls while adding on after-market components. Here are a few diagrams
Simple add on
Adding Bass
OEM Integration - Line Output Converters
Bass Bandit beware
If you have more questions, please don’t hesitate to call.