Hi guys I have been planning converting my non nav 05TL to nav for a month now. But still haven't got the job done. I've got all the parts except for the clock display(waiting on it to be shipped), HFL buttons, and trunk liner(waiting on it to be shipped). Just want to make sure if I could mix my 05 radio unit with the 08TL type S navigation unit. And do I have to get an 05 HFL buttons? or 08HFL buttons.

 

you are fine with the 08 nav unit, you will need 05 hfl buttons because the 08 buttons are used with a different steering wheel design.