Nissan Stereo Wiring Diagrams & Color Codes
Nissan Altima (2015)
Audio unit terminal layout
This is the layout of the terminals you can use for reference. 
Wiring diagram with 6 speakers
20-pin connector
Audio unit (with base audio system) 
Left Front Speaker (+) Violet, Pin 2 Left Front Speaker (-) Sky Blue, Pin 3 Left Rear Speaker (+) Brown, Pin 4 Left Rear Speaker (-) Yellow, Pin 5 ACC Pink, Pin 7 Illumination (-) Grey, Pin 8 Illumination, Light SW (+) Red, Pin 9 Right Front Speaker (+) Yellow, Pin 11 Right Front Speaker (-) Brown, Pin 12 Right Rear Speaker (+) Light Green, Pin 13 Right Rear Speaker (-) Violet, Pin 14 Speed Signal, Green, Pin 18 Battery, Green, Pin 19 Ground (-) Grey, Pin 20
Antenna signal
Microphone signal
Nissan Frontier (2000) radio wiring diagram
MODELS WITH BASE AUDIO SYSTEM 
MODELS WITH PREMIUM AUDIO SYSTEM 
