FITS THE FOLLOWING VEHICLES: 
(SELECT) HONDA
(SELECT) SCION
(SELECT) SUBARU
(SELECT) TOYOA
----------------------
CLICK HERE FOR SPECIFIC VEHICLES
---------------------------------
iDATALINK MAESTRO ACC-USB-UTO2 
Factory USB Port to Aftermarket Radio
GENERAL FEATURES:
Connects factory USB Port to Aftermarket Radio.
First, you connect the ACC-USB-UT02 to your Windows-based computer (not compatible with Mac) using the included USB cable, and follow the instructions. 
Once the unit has been "flashed," it's ready to go. 
Next, you'll either solder or crimp the vehicle-specific idatalink Maestro harness