I need to find out which stereo wires are the positive and which are the negatives?

2002 Chrysler Sebring Car Radio Installation Instructions
Car Radio Battery Constant 12v+ Wire: Orange/Black
Car Radio Accessory Switched 12v+ Wire: White/Green
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Green/White
Car Stereo Dimmer Wire: Black/Green
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): White/Blue
Left Front Speaker Negative Wire (-): Black/Blue
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Blue/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Yellow
Left Rear Speaker Negative Wire (-): Brown/Light Blue
Right Rear Speaker Positive Wire (+): Blue/White
Right Rear Speaker Negative Wire (-): Blue/Orange
24 7 Locksmith Tonawanda NY 716 200 1030 Emergency Locksmith

Car Radio Battery Constant 12v+ Wire: Red/Black
Car Radio Accessory Switched 12v+ Wire: Blue
Car Radio Ground Wire: N/A
Car Radio Illumination Wire: Red/Yellow
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Blue/White
Left Front Speaker Negative Wire (-): Blue/Yellow
Front Speaker Positive Wire (+): Brown
Front Speaker Negative Wire (-): Brown/White
Car Audio Rear Speakers Location: Side Panels
Left Rear Speaker Positive Wire (+): Red
Left Rear Speaker Negative Wire (-): Green
Right Rear Speaker Positive Wire (+): Blue
Right Rear Speaker Negative Wire (-): Pink

Radio Battery Constant 12v+ Wire: Orange
Radio Accessory Switched 12v+ Wire: Yellow
Radio Ground Wire: Black/White
Radio Illumination Wire: Brown/White
Stereo Dimmer Wire: Green
Stereo Antenna Trigger Wire: Gray
Left Front Speaker Positive Wire (+): Violet
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Following are color codes of stock stereo wirings for your Chrysler 300 - you should compare the diagrams with your car and use the one which seems right for you:
1st Diagram
• Car Radio Battery Constant 12v+ Wire: Pink
• Car Radio Accessory Switched 12v+ Wire: Blue
• Car Radio Ground Wire: Gray
• Car Radio Illumination Wire: Red/Blue
• Car Stereo Dimmer Wire: Red/Yellow
• Car Stereo Antenna Trigger Wire: N/A
• Car Stereo Amp Trigger Wire: N/A
• Car Stereo Amplifier Location: N/A
• Car Audio Front Speakers Size: 6 1/2?
• Car Audio Front Speakers Location: Doors
• Left Front Speaker Positive Wire (+): Pink
• Left Front Speaker Negative Wire (-): Blue
• Right Front Speaker Positive Wire (+): White
• Right Front Speaker Negative Wire (-): Black
• Car Audio Back Speakers Size: 6? x 9?
• Car Audio Back Speakers Location: Side Panels
• Left Back Speaker Positive Wire (+): Light Green
• Left Back Speaker Negative Wire (-): Purple
• Right Back Speaker Positive Wire (+): Blue
• Right Back Speaker Negative Wire (-): Pink

2.
• Car Radio Battery Constant 12v+ Wire: Yellow
• Car Radio Accessory Switched 12v+ Wire: Green/Black
• Car Radio Ground Wire: Chassis
• Car Radio Illumination Wire: Red
• Car Stereo Dimmer Wire: Gray
• Car Stereo Antenna Trigger Wire: N/A
• Car Stereo Amp Trigger Wire: Green/White
• Car Stereo Amplifier Location: Under the Passenger Front Seat.
• Car Audio Front Speakers Size: N/A
• Car Audio Front Speakers Location: N/A
• Left Front Speaker Positive Wire (+): White
• Left Front Speaker Negative Wire (-): Black
• Right Front Speaker Positive Wire (+): Yellow
• Right Front Speaker Negative Wire (-): Brown
• Car Audio Back Speakers Size: N/A
• Car Audio Back Speakers Location: N/A
• Left Back Speaker Positive Wire (+): Brown
• Left Back Speaker Negative Wire (-): Black/Red
• Right Back Speaker Positive Wire (+): Blue
• Right Back Speaker Negative Wire (-): Black/White

2006 Toyota Corolla Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Blue/White
Car Radio Accessory Switched 12v+ Wire: Gray
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Green
Car Stereo Dimmer Wire: White/Black
Car Stereo Antenna Trigger Wire: Black
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Violet
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Blue
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Red
Right Rear Speaker Negative Wire (-): White

2011 Mazda 3 Car Stereo Wire Harness Color Codes
Car Radio Battery Constant 12v+ Wire: Brown
Car Radio Accessory Switched 12v+ Wire: Light Blue
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Light Green
Car Stereo Antenna Trigger Wire: Black
Car Stereo Amp Trigger Wire: Light Blue
Car Stereo Amplifier Location: Under the Passenger Seat
Left Front Speaker Positive Wire (+): White/Yellow
Left Front Speaker Negative Wire (-): Blue/Green
Right Front Speaker Positive Wire (+): Red/Blue
Right Front Speaker Negative Wire (-): Red/White
Left Rear Speaker Positive Wire (+): White/Light Green
Left Rear Speaker Negative Wire (-): Pink/Brown
Right Rear Speaker Positive Wire (+): Light Blue/Brown
Right Rear Speaker Negative Wire (-): Light Green/Light Blue

2008 Ford Fusion Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Blue/Red
Car Radio Accessory Switched 12v+ Wire: Green
Car Radio Ground Wire: Black/Blue
Car Stereo Antenna Trigger Wire: Purple/Black
Left Front Speaker Positive Wire (+): White
Left Front Speaker Negative Wire (-): White/Brown
Right Front Speaker Positive Wire (+): White/Purple
Right Front Speaker Negative Wire (-): White/Orange
Left Rear Speaker Positive Wire (+): Brown/Green
Left Rear Speaker Negative Wire (-): Brown/Yellow
Right Rear Speaker Positive Wire (+): Brown/White
Right Rear Speaker Negative Wire (-): Brown/Blue

1995 Nissan Altima 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/Blue
Car Stereo Dimmer Wire: Red/Yellow
Car Stereo Antenna Trigger: Green/White
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 (+): Blue/White
Left Front Speaker Negative Wire (-): Blue/Yellow
Right Front Speaker Positive Wire (+): Brown
Right Front Speaker Negative Wire (-): Brown/White
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Red
Left Rear Speaker Negative Wire (-): Green
Right Rear Speaker Positive Wire (+): Blue
Right Rear Speaker Negative Wire (-): Pink

This is from a 2004 Solara, but it's probablly the same.

2004 Toyota Solara Radio Wiring Chart
Car Radio Battery Constant 12v+ Wire: Blue/Yellow
Car Radio Accessory Switched 12v+ Wire: Gray
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Dark Green
Car Stereo Dimmer Wire: White/Green
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Violet
Right Front Speaker Positive Wire (+): Green
Right Front Speaker Negative Wire (-): Blue
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Red
Right Rear Speaker Negative Wire (-): White