just installed the nav system, 6 disc cahanger, and visuallogic in dash dvd player purchased it all from Jason at
http://www.jpcustoms.com he was very helpfull and informative.
installed 3 small switches in the open slot under the tow switch. 1 for complete use of the nav features while diving, 1 for the overide to play dvd's through the nav unit and the other for a reverse camera ( to be purchased at a later date)to allow use during driving.
will post pics as soon as i can take some
thanks folks for all your help
especially Klaus
Jay