Pinouts >  Nissan, Infinity OEM Head units
20 pin Nissan Head Unit Audio main connector layout
20 pin Nissan Head Unit Audio main connector
p/n 28185-JA110, 28185-ZN40C, faceplate PY15B

Pin
Num
W/C Signal
1 B/P
Amp. ON signal (>6.5V)
 
2 G
Sound signal front LH (+)
 
3 R
Sound signal front LH (-)
 
4 GR/V
Sound signal rear LH (+)
 
5 W/L
Sound signal rear LH (-)
 
6 W/G Steering switch signal A
Press SEEK DOWN switch. 0.7 V
Press SEEK UP switch. 1.3 V
Press PHONE switch. 2.0 V
Except for above. 3.3 V
7 V/Y
ACC power supply
 
10   shield
11 B
Sound signal front RH (+)
 
12 W
Sound signal front RH (-)
 
13 V
Sound signal rear RH (+)
 
14 LG
Sound signal rear RH (-)
 
15 L/B
Steering switch signal ground
 
16 GR/L Steering switch signal B
Press SOURCE switch. 0 V
Press TALK switch. 0.7 V
Press VOL UP switch. 1.3 V
Press VOL DOWN switch 2 V
Except for above. 3.3 V
18 V/W
Vehicle speed signal (8-pulse)
 
19 Y/R
Battery power supply
 
20   shield

W/C stands for Wire Color. They are for Altima 2008 and very dependent on model and model year.

8 pin Nissan Head Unit

Pin
Num
W/C Signal
21 L
M-CAN +
 
22 P
M-CAN -
 
23,25   shield
26 B/R
Telephone audio in
 
27 Y
Telephone audio in ground
 
28 R/W
Telephone ON signal
 

12 pin Nissan NDS CD Changer

Pin
Number
Description Direction Wire
Color
31 Satellite radio sound signal
L-
Input when Satellite radio mode selected W/L
32 Satellite radio sound signal
L+
Input when Satellite radio mode selected Y/L
33 Satellite radio sound signal
R-
Input when Satellite radio mode selected Y/G
34 Satellite radio sound signal
R+
Input when Satellite radio mode selected BR/L
35 Shield (audio)    
36 Shield (data)    
38 Request signal(SAT→CONT) Input R
39 Communication signal(SAT→CONT Input G
40 Communication signal(CONT→SAT Output B
12 pin Nissan NDS CD Changer connector layout
12 pin Nissan NDS CD Changer connector
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8 pin Nissan Head Unit connector layout
8 pin Nissan Head Unit connector
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