I'm having a problem with my head unit not seeing,

[todd1010]

my Phatbox. Ok, I've verified that my phatbox is still functioning by placing it in my buddies car. I somehow need to check my CD Changer wire to be sure its fully functioning.

[judb]

I have access to the repair manuals for 1999-2005 golf, GTI Jetta and Jetta wagons..

this includes the stereos and wiring harness information, what stereo and what type of car is it?

if its not one of those.. check out www.bentleypublishers.com and you can get an online subscription to the service on that website for VW / Audi / BMW cars  pretty neat really.