Stereo wire codes diagram for a 1993 Ford Aerostar

SOURCE: 1993 Ford Aerostar fuse layout diagram

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

ford manual with diagrams

in pdf

SOURCE: looking for 1996 ford mustang wiring diagram for stereo

things to consider:
Does it have a factory amplifier?
Is the factory harness still present?
Does it still have the speakers present?

You are going to only have a certain amount of wires... If the factory harness is still there you can simply purchase an aftermarket or just look at one in a local store on what wires are what.

you would have your:
gray and gray w/ black
purple and purple w/ black
green and green w/ black
white and white w/ black
these are normally used as an after market clip on harness for that factory wiring. (left front, right front, left rear, right rear)

Obviously your going to have the constant (yellow), ignition (red) and the ground (Black);
so the others would be either a remote (amp or power antenna) usually white with blue strip and dimmer normally orange for the after market harness, and the others will be the speakers.

What you COULD try is using a 9v battery and picking up the wires that are solid and striped and touching them to the 9v battery.

When you find the two that make that speaker make a popping sound you have found that speaker.
Once you have found the speaker that pops, you should be able to take it out and look at the color of the wires to make sure you will have the pos and neg for each speaker correctly set.

You dont want some speakers being in phase while other are out of phase. if so the sound wont be right.

SOURCE: what is the wiring color code for a 2005 ford expedition radio

use google. i did and i got this
Car Radio Battery Constant 12v+ Wire: Light Green
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Light Blue/Red
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: If equipped, the factory amplifier is located behind the trim panel on the right side of the cargo area.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Orange/Light Green
Left Front Speaker Negative Wire (-): Light Blue/White
Right Front Speaker Positive Wire (+): Dark Green/Orange
Right Front Speaker Negative Wire (-): White/Light Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Gray/Light Blue
Left Rear Speaker Negative Wire (-): Tan/Yellow
Right Rear Speaker Positive Wire (+): Orange/Red
Right Rear Speaker Negative Wire (-): Brown/Pink

Earl Norager

• 355 Answers
• Posted on Aug 13, 2009

SOURCE: diagram for ford aerostar transmission

YOU CAN FIND A PLACE CALL TRANS STAR TRANSMISSION PRODICTS THEY WILL SELL YOU A BOOK OR EBAY

SOURCE: I need the stereo wire

1995 Ford Aerostar Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Green/Yellow
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Red or Black
Car Radio Illumination Wire: Blue/Red
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: Orange/Blue
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5?
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Orange/Green
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): White/Green
Right Front Speaker Negative Wire (-): Black/White
Car Audio Rear Speakers Size: 3 1/2?
Car Audio Rear Speakers Location: Tail Gate
Left Rear Speaker Positive Wire (+): Pink/Green
Left Rear Speaker Negative Wire (-): Pink/Blue
Right Rear Speaker Positive Wire (+): Pink/Blue
Right Rear Speaker Negative Wire (-): Green/Orange

if you need further assistance please let me know. If this helped solve your problem then please feel free to rate it accordingly. Thanks, Midwest-tek