Atwalz
Civil Engineer
Installed Prestigious Society Nav and TV enhancement module. It works as prescribed. Easy mod, provided you have appropriate tools such as flat head screw driver or trim removal tool, tape and 10mm socket/wrench. Make sure to read the instructions in the package and don't need to unplug all connection behind the nav unit. Wifey loves the TV unlock in front seat. Press volume "--++" gives you access on the all options while the GPS signal is disabled. To get the GPS signal back and return to factory recommended settings press volume "--++" again. DVD is unlocked all the time. Very simple to use.