need immidiate help 2003 jetta

Hey everyone, I just purchased a 2003 jetta GLS. The stock system is a Monsoon with CD and Tape. I am looking to add a amp and some subs. Now I was told that I would need to get RCA converters and connect them to the speaker wires on the back of the head unit. Now will this distort the system at all?? Also when wiring the power wire for the amp, how the hect do I get the wire through the Firewall. I cannot find any holes. Please if someone can help me I would appriciate it. Thank you.

does ur monsoon stereo have the 4 inch tall deck with the 8 speakers? if so ur gonna need a land out converter so you can add the subs

email me at volboy29@yahoo.com and ill tell u everything u need to do

i did the same thing in my 02 vw jetta gli  email me and ill try my best to help you

I am also into the jettas i have installed several system in the jetta 4   there is a rubber grommet uder the dash just above the steering column that you can push out then make a hole through it just the size u need for wiring and replace it    thats the easiest way as far as the firewall goes. . . . as for adding subs I am not positive bc most of my installs involve changin the head unit I believe the gr8marauder is correct thatu need a convertor.. . . hope it helps

Justin