Try looking on www.avic411.com
they have some good information on the avicZ110-bt. I copied the following from an old post here:
FYI - 2009 Tacoma VSS / Speed Sense Wire Location
In case anyone has tried connecting the VSS wire from an in-dash Nav in a 2009 Tacoma, the location of the wire appears to be in a different location than previous models.
I was successful in connecting to the Purple/White wire at Pin #5 on the only black plug on the front of the fuse box on the driver's side.
Simply remove the change pocket (like the glove box) and you will see the fuse box. There is only one black plug. I unplugged it and pulled it back thru another harness that was blocking good access to the wires. I also cut off the electrical tape they had wrapped around it. This gave me good room to work with, its pretty tight in there. It may be easier to remove the whole bottom panel, I just didnt want to figure out how to take it off.
Next, simply tap the only Purple/White wire in the plug, Pin #5.
I tried 4 times tapping the Purple/White at the ECU behind the glove box, but it didnt work. Thats where most of the threads here tell you to tap. As stated before, it seems like it may have changed from 2008 and older trucks.
Hope this helps someone..