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40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector layout
40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector
some model after 2000
pin connector main connector B connector C
1 Speaker FR+ line out L tape in L+
2 Speaker RR+ cd-changer line in gnd tape in L-
3 Speaker RL+ line out GND AUX L
4 Speaker FL+ vcr line in R+ AUX R
5 Speaker FR- vcr line in L+ navi/tv in +
6 Speaker RR- vcr line in gnd telefon +
7 Speaker RL- line out R tape in R+
8 Speaker FL- cd changer line in L+ tape in R-
9 I-BUS cd changer line in R+ navi bus
10 tel mute tv line in R+ AUX GND
11 tel in tv line in L+ navi/tv in -
12 gnd tv line in gnd telefon -
13 amplifier remote x x
14 backlight x x
15 +12V x x
16 +12V ACC x x
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BMW Car stereo Quadlock old visual pinout:click to enlarge
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