Hello LS folks,
I have a 2004 LS with the factory 6 CD and wanted to install the factory NAV system. Is this a plug and play? In other words, are the wiring harnesses installed like most modern cars and you just buy the parts and install?
I noticed the THX unit is a 6 CD and the standard unit is a single CD? Is the THX unit an all in one? Or does it use a separate DVD player mounted in the trunk? Where exactly in the trunk does the DVD mount?
Thanks for your replies, in advance.

I have a 2004 LS with the factory 6 CD and wanted to install the factory NAV system. Is this a plug and play? In other words, are the wiring harnesses installed like most modern cars and you just buy the parts and install?
I noticed the THX unit is a 6 CD and the standard unit is a single CD? Is the THX unit an all in one? Or does it use a separate DVD player mounted in the trunk? Where exactly in the trunk does the DVD mount?
Thanks for your replies, in advance.