| Pin | Wire Color | Function | |------|-------------|----------------| | 1 | Red/Black | 12V Accessory (Switched) | | 2 | Red/Blue | Illumination (+) | | 3 | Orange/Black | Illumination (-) | | 4 | Blue/Red | Remote Amp Turn-On | | 5 | White | Left Front Speaker (+) | | 6 | Black/White | Left Front Speaker (-) | | 7 | Blue/Red | Right Rear Speaker (+) | | 8 | Red/Green | Right Rear Speaker (-) | | 9 | Gray | Right Front Speaker (+) | | 10 | Gray/Black | Right Front Speaker (-) | | 11 | Light Green | Left Rear Speaker (+) | | 12 | Violet | Left Rear Speaker (-) | | 13 | White/Green | Steering Wheel Control (Signal) | | 14 | Brown | Steering Wheel Control (Ground) | | 15 | N/A | Not used | | 16 | Yellow/Red | 12V Constant (Memory) | | 17 | Black | Ground | | 18 | N/A | Not used | | 19 | N/A | Not used | | 20 | N/A | Not used |
The 2006 Altima uses standard aftermarket coloring. However, the dash tweeters are wired in parallel with the front door speakers. If your aftermarket tweeters sound harsh, install a bass blocker (capacitor) on the positive wire. 2006 Nissan Altima Radio Wiring Diagram