Pinouts >  Genuine Nissan Head units
20 pin Nissan Head Unit Audio main connector layout
20 pin Nissan Head Unit Audio main connector
p/n 2591A ZX78A, 2591A-1LA7A, 2591A-ZX77A, 2591A-ZX77B, 2591A-ZX77C, 2591A-ZX77D, 2591A ZX78C, 2591A ZX78D, 2591A ZX78B, 2591A ZX78E. Models CV-VN11E24D, CV-VN51E24D, CV-VN11E54D

Pin
Number
wire color Pin
Name
Description
6 P Steering switch signal A Keep pressing SOURCE switch. 0 V
Keep pressing MENU UP switch. 0.7 V
Keep pressing MENU DOWN switch. 1.3 V
Keep pressing  Phone switch 2.0 V
Except for above. 3.3 V
7 V ACC power supply Ignition - Battery voltage
9 R Illumination signal ON=>12V, OFF=>0V
15 B Ground  
16 L Steering switch signal B Keep pressing VOL DOWN switch. 0 V
Keep pressing VOL UP switch. 0.7 V
Keep pressing switch. 1.3 V
Except for above. 3.3 V
19 Y Battery power supply Battery voltage
20 B Ground  

Pin
Number
wire color Pin
Name
Description
36 O
Signal VCC
 

8.8 V out
37 LG
Signal ground
 
 
38 R
Horizontal synchronizing(HP) signal
 
 
39 BR
Communication signal (DISP→CON)
 
 
40 B
RGB area (YS) signal
 
 
41   shield  
42 W
RGB synchronizing signal
 
 
43 G
RGB signal (R: red)
 
 
44 L
RGB signal (G: green)
 
 
45 P
RGB signal (B: blue)
 
 
46 V
Composite image signal ground
 
 
47 SB
Composite image signal
 
 
48 Y
Inverter VCC
 
8.8V out
49 BR
Inverter ground
 
 
50 G
Vertical synchronizing (VP)signa
 
 
51 Y
Communication signal(CONT→DISP)
 
 
52,57,58   Shield  

Pin
Number
wire color Pin
Name
Description
61 G
AUX image signal
 
 
62 W
Camera image signal
 
 
69 R
AUX image signal ground
 
 
70,71 B shield  

Pin
Number
wire color Pin
Name
Description
76 Y
AV communication signal (L)
 
 
77 G
AV communication signal (H)
 
 
78 B
AV communication signal (L)
 
 
79 G
AV communication signal (H)
 
 
80 P
CAN–L
 
 
81 L
CAN–H
 
 
82 B
Switch ground
 
 
86   shield  
87 L
TEL voice signal
 
 
88 P TEL voice ground  
92 R
Vehicle speed signal (8-pulse)
 
 
93 V
Parking brake signal
 
 
94 O
Reverse signal
 
 
95 G
Ignition signal
 
 
96 Y
Disk eject signal
 
 
102 B
AUX GND
 
 
103 W
AUX sound signal LH
 
 
104 R AUX sound signal RH  

Pin
Number
wire color Pin
Name
Description
108 V
Sound signal rear RH
 
 
109 P
Sound signal front RH
 
 
110 W
Amp. ON signal
 
 
111 B shield  
112 BR
Sound signal rear LH
 
 
113 R
Sound signal front LH
 
 
114 LG
Sound signal rear RH GND
 
 
115 L
Sound signal front RH GND
 
 
118 Y
Sound signal rear LH GND
 
 
119 G
Sound signal front LH GND
 
 

Pin
Number
wire color Pin
Name
Description
120 B
Satellite radio sound signal LH
 
 
121 G
Satellite radio sound signal RH
 
 
122 B
Communication signal(CONT→SAT)
 
 
124 W
Satellite radio sound signal LH GND
 
 
125 R
Satellite radio sound signal RH GND
 
 
126,127   shield  
128 SB
Mode change signal
 
 
129 W
Request signal(SAT→CONT)
 
 
130 R
Communication signal(SAT→CONT)
 
 

Pin
Number
wire color Pin
Name
Description
132 G
USB ground
 
 
133 R
USB D− signal 
 
 
134 W
V BUS signal
 
 
135 L
USB D+ signal
 
 
136   shield  
32 pin Nissan Head Unit Additional connector layout
32 pin Nissan Head Unit Additional connector
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