Hello DIYMAers!
First post here from absolute noob. All of the questions below probably sound utterly inane to all of you. Thanks for answering all the more!

I am thinking of adding a JBL MS-8 to my 2009 Jetta TDI. I have searched this forum and spent some time googling but have not found much specific info on how to install this unit in my car.

The manual downloaded from the JBL site is quite clear but there are a couple of things that are still unresolved:
1- Where on the factory headunit is the trigger wire that I need to connect to the REM IN terminal?
2- Do I need a wiring harness to connect to the stereo?
3- Are the internal amps sufficient to drive the stock VW drivers?

Cheers,
Max