You're probably here because you're interested in the harness you need to add the turn signals integrated into the door mirrors found on the 2015+ STI.
Check out the product page for more information. I can supply you with the wiring you need to do a clean, straightforward installation.
Once you have the harness, you can follow the instructions on the mods page to install your turn signals!
I'm on a boat!
If you care to know more about me and why this site even exists...