Can convert my non nav to nav for about $400 not sure what parts are needed and worth it. Local wrecking yard says they have all the pieces needed any tried

 

car is a 2006 tl auto

 

the conversion to navi has been done before. It's an very labor intensive process that leads to almost all of the interior and dash to be removed. The search function here will yield a host of threads with all the part numbers of the parts needed.

 

is tgher anyone in Nor Cal who has done that would care to assist?

 

Definitely doable, labor intensive and good luck. If you do it I commend you for your dedication... LoL