How do i know witch is witch?

Question

ok im installing new speakers in the rear of my car and i need to wire the wires that were already in there to my cross over but how do i ne witch is witch?

Answer 1

really you just turn it on and touch one wire on either side if it works its good kind of shoul dhave look when removing it most are marked right or left or ground what you have is left right front and rear speaker wires one  ground wire and its always black

Answer 2

1997 Ford Escort Car Stereo Wiring Diagram

Car Radio Battery Constant 12v+ Wire: Blue/Red

Car Radio Accessory Switched 12v+ Wire: Blue/Black

Car Radio Ground Wire: Black

Car Radio Illumination Wire: Red/Black

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 Size: N/A

Car Audio Front Speakers Location: N/A

Left Front Speaker Positive Wire (+): Violet

Left Front Speaker Negative Wire (-): Blue/Orange

Right Front Speaker Positive Wire (+): Blue/White

Right Front Speaker Negative Wire (-): White

Car Audio Rear Speakers Size: N/A

Car Audio Rear Speakers Location: N/A

Left Rear Speaker Positive Wire (+): White/Blue

Left Rear Speaker Negative Wire (-): Red/Blue

Right Rear Speaker Positive Wire (+): White/Green

Right Rear Speaker Negative Wire (-): Blue