Originally Posted by gmoore

Just thought I'd add this after not being able to find a wiring diagram for the factory stereo . I put in an older Pioneer stereo without anything to do with a cell phone ,,,,old school !
There are 11 wires coming out of the original Infinity stereo (without navigation} Below are the wires as I diagnosed !!!!
First and foremost ,,,, make sure you have good lighting as the colors are hard to distinguish !!! The car is an 04 Crossfire .

(bigger wire) Red/Green stripe : Constant Hot
(bigger wire) Light Pink?/Yellow stripe and green circles : Ignition switched Hot
(bigger wire) Brown : Ground
Blue/Brown stripe Left speaker Pos.
Blue : Left speaker neg.
Yellow : Right speaker Pos.
Yellow/violet stripe : Right speaker Neg
Blue/Green stripe : to amplifier

The following wires were not needed for my stereo and are probably used for phones or data of some kind !!! If anyone knows what they are please add it !!!
Green/White stripe
Gray/Yellow stripe
Gray/Blue stripe

There are only 2 channels Left and Right
The battery check to distinguish which speakers are which won't work because of the amp !!!