2010-2013 Mazda 3 & Skyactiv Audio & Electronics
I'm installing a new head unit (Pioneer AVH-X5800BHS). I ordered the Metra 70-7903.
When I removed the stock radio, I noticed there were 3 connections. The antenna, and 2 wiring harnesses.
Now, I hate tapping into the stock wiring (for the obvious reason of screwing with the...