Mazda 2 / Demio / CX-3 2016 2017 2018 amplifier and speaker pinout

DC3E66DRX or similar. Maybe someone will find this useful.

At amp connector (behind glove compartment)

			tab	tab	tab	tab	tab
Blue +12V	N/C	mintgreen LF+	skyblue LF-	brown LB+	lightblue LB-	N/C	gray power-on signal	N/C	N/C	Black GND
	N/C	red RF+	white RF-	green RB+	yellow RB-	N/C	brown ???	N/C	N/C

At speakers

Location	Color	Function
Left front door	Green	Positive +
Left front door	Blue	Negative -
Left tweeter	Green	Positive +
Left tweeter	Blue	Negative -
Right front door	Blue	Positive +
Right front door	Green	Negative -
Right tweeter	Blue	Positive +
Right tweeter	Green	Negative -
Left back door	Brown	Positive +
Left back door	Light blue	Negative -
Right back door	Green	Positive +
Right back door	Yellow	Negative -