Not sure if this is accurate or if anyone needs it but I figured I'd post it here for anyone that needs it.

From modifiedlife.com

2007 Nissan Sentra Car Stereo Radio Wiring Diagram

Car Radio Constant 12v+ Wire: Pink
Car Radio Switched 12v+ Wire: Blue
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Red/Green
Car Stereo Dimmer Wire: Red/Yellow
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Blue
Right Front Speaker Positive Wire (+): White
Right Front Speaker Negative Wire (-): Black
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Light Green
Left Rear Speaker Negative Wire (-): Violet
Right Rear Speaker Positive Wire (+): Blue
Right Rear Speaker Negative Wire (-): Pink