Anyone try the Nav override from PrestigiousSociety?

Yes. See this thread:

http://priuschat.com/forums/gen-iii...-prestigious-society-navi-hack-installed.html

It's an easy install, as long as taking apart dash parts doesn't make you nervous. To use it, you just press a button and the nav and other lockouts are overridden for I think 5 minutes. However, it also won't know exactly where you are until the 5 minutes is up or you press the button again.

 

I built my own out of a 555 timer, a DEI 528T pulse timer, a 4PDT relay, and an On-Off-(On) switch for less than $30. The momentary side of the switch activates the 528T timed at 1 minute to activate the 555 timer. The On side of the switch just activate the 555 timer as long as I want.

 

There's also another alternative - Beat-Sonic kits. It's priced lower and seems to get the job done:

 

Ok, Has anyone tried the Beat-Sonic system? I have a PIP and I really want video input and nav features unlocked. It sucks that Toyota locks them on all their cars.