I am baffled as far as wireing the new harness to the old wires in my '03 F-150 stereo they have several wire of the same color 4 black wires 2 purple and black wires ect i need help.

This often doesn't work because the radio is monitored by the Body Control Module on the 5 volt computer network.


Wiring

Subaru Legacy, Outback, Baja (1993-2008) Car Stereo ...

Pinout Guide https://pinoutguide.com > ... > Subaru pinouts
Oct 22, 2019 - Pin #. Function. Legacy / Outback / Baja Factory Radio Connector Wire Color (wires go to car's Speakers, etc.) Subaru After-market Harness ...

2000 Subaru Impreza Car Stereo Wire Colors and Locations

the12volt.com https://www.the12volt.com > installbay > stereodetail
2000 Subaru Impreza Stereo Wiring ; Left Front (-), Green/Black ; Right Front (+), Red/Yellow ; Right Front (-), White/Black ; Rear Speakers, 6 1/2" Rear Doors.

Installation kits

https://www.google.com/search?q=2000+subaru+outback+stereo+installation+kit

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I found a wiring diagram for the 2005 Hyundai Elantra that might be helpful . According to the diagram, the color codes for the factory wiring harness are as follows:

Wire Color Function
Orange/Black 12V Constant
Yellow 12V Accessory
Black Ground
Blue/Black Power Antenna
Green/Orange Illumination
Brown/White Left Front Speaker (+)
Black/White Left Front Speaker (-)
Brown/Yellow Right Front Speaker (+)
Black/Yellow Right Front Speaker (-)
Brown/Red Left Rear Speaker (+)
Black/Red Left Rear Speaker (-)
Brown/White Right Rear Speaker (+)
Black/White Right Rear Speaker (-)
If you don't have a plug on your factory wiring harness, you can hardwire it by connecting each wire to its corresponding wire on your new stereo. You can use crimp caps or soldering to make the connections

. If you're not comfortable with hardwiring, you may want to consider purchasing an aftermarket wiring harness that clips onto the factory harness you removed off the rear of your factory radio during its removal. This will make it easier to connect your new stereo to your car's electrical system .Hyundai Radio Wiring Color Codes - Radio Codes Calculator

1.Look on the top of the old deck
2.red wire power
3.black ground
4.yellow wire memory
Than you can try and do it from the sound coming out of the sperkers

Try going to the nearest Walmart. They have cable harness adapters for all Makes of Cars there. You need to find the one that goes to your car then you will need some **** splices, and a crimping tool. You have to connect the wires from the cable harness to the wires that come from the back of the new car stereo you're wanting to install. You may also need a dash kit which they also sell at Walmart for cars. The wiring is pretty easy, red to red, black to black, the wires with a color and a stipe are the speaker wires. The ones with a black stripe are the neg. and the solid colors are positive. Ex. purple/puple with back stipe. There will be 2 sets of speaker wires for every speaker in the car either 4 or 6. Try that out and see how it goes.

Red is power (+12v)
Black is negative
Orange or Yellow is memory
Blue is for amplifer turn on signal
Then there will be 4 or 6 pairs wires with the same color which are the speaker wires. The solid colors are positive, the solid with a black stripe are negative.
You can get a cable harness for your car from Walmart and then all you need to do is match all the wires color for color to each other from the cable harness to the new stereo wires with **** splices and a crimping tool which you can also get from Walmart and that's it. Then all you need to do is connect the two old connector from the old car stereo to the new cable harness connector which is made for your car and there you go. After that you may need a dash kit which you can also get at Walmart..Hope this helps.

Radio Constant 12V+ Wire: White/Green
Radio Switched 12V+ Wire: White/Red
Radio Ground Wire: Black
Radio Illumination Wire: n/a
Radio Dimmer Wire: Red/Black
Radio Antenna Trigger Wire: n/a
Radio Antenna Location: Rear Glass
Front Speakers Size and Location: 6 1/2′ Doors
Left Front Speaker Wire (+): Blue/Green
Left Front Speaker Wire (-): Gray/Black
Right Front Speaker Wire (+): Red/Green
Right Front Speaker Wire (-): Brown/Black
Rear Speakers Size and Location: 6′ x 9′ Rear Deck
Left Rear Speaker Wire (+): Blue/Yellow
Left Rear Speaker Wire (-): Gray/White
Right Rear Speaker Wire (+): Red/Yellow

Any car stereo shop can help you. Be nice to them,they can help you, maybe charge a few bucks. Keep the faith.

go to advanced auto parts and buy a connector for your car. just go and give them year, model and make and when you get it connect the same color wires from the stereo to the stereo harness. all of the colors are the same.

Constant 12V+                 Blue/Yellow  Switched 12V+                             Gray  Ground                                         Brown  Illumination +                                Green  Dimmer n/a  Antenna Trigger                             Black/Red  Antenna Driver's Pillar  Front Speakers                             3 1/2" Dash Left Front (+)                                 Pink  Left Front (-)                                  Purple  Right Front (+)                               Light Green  Right Front (-)                                Blue  Rear Speakers                               5 1/4" Rear Deck Left Rear (+)                                  Black  Left Rear (-)                                   Yellow  Right Rear (+)                                Red  Right Rear (-)                                 White