2015 CX-5 Bose Amp Wiring (F & R line in)

:
Switzerland
:
2016 Mazda CX-5
Hi All,

I search a lot and found different contradictory diagrams here. I need your help to find the location and/or the color of the wires for the "line in" that enters the Bose amp under the passenger seat (2015 CX-5).

FL+
FL-
FR+
FR-

and/or

RL+
RL-
RR+
RR-

I thank you a lot for your help.
 
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