Hello,
I have a 2013 GS-SKY, and I want to replace the stock CD player with the touch screen / nav unit that came with the GT and Mazdaspeed 3. My stock stereo has 3 ports, one for power/etc, one for other speakers/accessories, and the antenna port.
The nav unit I bought it from a Mazdaspeed 3, same year. It has the same power port, but the accessory port is longer and thinner. The antenna is the same.
When I installed it, I only get radio and CD, and sound from the front left and right speakers. The nav, bluetooth, and USB, plus steering controls all don't work at all.
Does anyone have a sense of whether or not this is a lost cause?