I couldn't find a definitive answer anywhere on this, so I thought I'd ask the group. I have a 2005 package 4 with the base radio, and I have the opportunity to purchase a 2005 JBL radio with CD changer. Would I be able to simply swap out the two radios, so that I have use of the CD changer, or is there more to the JBL radio that would make me unable to install it in place of the base radio? I'm not looking for some increase in performance, just the added CD changer that comes in the JBL radio. Thanks!
I'd have to guess no. The JBL has 4 more speakers and uses an amp under the passengers seat, I'd bet it's a completely different harness back there, but I'm not sure.
I installed the JBL system in our '08. At the very least you will need the 6 disk changer and the JBL amp. To do it properly you will need the JBL speakers also. You will have to construct a wiring harness (or get one from a salvage car) to go from the radio to the JBL amp and you will also have to add wiring to the front doors for the tweeters at the least and if you are installing all the JBL speakers you will have to modify the rear door speaker wiring, add the center speaker wiring and cut a hole in the dash for the center speaker. All in all it's not a terribly complex process but it is time consuming.
