Den Kakkaew

Mazda 3 1.6L 2010 This is my old car, Mazda 3 1.6L 2010 model. This car stereo radio model has no any digital reader like USB or Bluetooth, just CD reader and FM/AM radio function.  But it has a strange button name "Media" on the right and I can't figure out what this thing for. So, I do a google and find something like below. AUX input port, car stero, Mazda 3, Sanyo A media button is for AUX input and it's didn't connect to anything. So, I design to use some Bluetooth module connect to it. Anyway, it's mine and it's old, So I can do anything without feeling pity with it. Alright, do research Car stero model nameplate My car stereo part number is "BCB1 66 ARX" I do research but no luck. There is no any document. But I found something look familiar like my stereo model. This is an auxiliary pin port diagram of J702 connector, g-pin is right channel input, f-pin is left channel input and e-pin is s