Remove Your Confusion About Ford Turn Signal Wire Colors 

By: Saiful Islam | July 21, 2022

The turn signal in your Ford vehicle is an essential part. When it damages or stops working, you need to change it. Replacing the harness without connecting the correct wires will damage the turn signal. Are you repairing your turn signal and confused with different wire colors?

Ford turn signal wire colors depend on the different car models. In F250, light green is for the left turn signal & orange is for the right. While in Ford mustang, orange is for the right turn signal & gray is for the left. Primarily, the black wire is the ground, and the coloring wires far from the black wire are for the turning signals.

This article will provide details about the signal wires for turning your Ford car. It will help you better understand the turn signal system and remove your confusion while working on the turn signal repair. 

Ford Turn Signal Wire Colors Code

Ford turn signal was not an official component of Ford vehicles until the mid-1950s. Now it has become an integral part of their cars. 

Every car of Ford or a third-party turn signal switch comes with a manual. In the manual, you will find a wiring diagram of how the fuse, the flasher, and the circuit work. 

Before going into which color is for which signal, we need to know some code of the colors of turn signal wiring. You need to look up the codes because, primarily, the manual comes in black & white. 

Color Code For Wiring 

Color Name Color Code 
Black BK
White WT
Brown BR
Dark Blue DB
Light Blue LB
Dark Green DG
Light Green LG
Orange OR
Pink PK
Red RD

Function Of Ford Turn Signal Wiring Color 

Here, by the function, we are referring which wire works for which turn signal, power, flasher, signal bulb, and ground. Different colors work as indicators of different functions. 

However, These indicators are what we need to understand to identify the wires to repair or replace the harness of the turn signal. But different models of Ford offer different factory wire colors.

We will present the wire color with their function based on some famous Ford models’ column connections. These colors of signal wires vary from model to model and year to year.

’66-’71 Ford Models’ Column Connections

Circuit FromTo Wire Color 
#44Turn flasher Turn switchLight Blue 
#460Headlight switchHorn switch Yellow
#482Horn switch Horn Blue-Yellow
#810Brake switch Turn signal switchGreen/ Red-Black


CircuitWire Wire Color
#2Right front turn and indicator lampWhite-Blue
#5Right rear brake and turn lampOrange-Blue
#3Left front turn and indicator lamGreen-White
#9Left rear brake and turn lampGreen-Orange


’72-’73 Ford Models’ Column Connections

Circuit FromTo Wire Color 
#44Turn flasherTurn switchBlue
#810Brake switchSignal switchRed-Black
#460Headlight switchHorn switchYellow
#482Horn switchHornBlue-Yellow


CircuitWire Wire Color
#2Right front turn and indicator lampWhite-Blue
#282Right rear brake and turn lamp, circuitGreen
#3Left front turn and indicator lampGreen-White
#283Left rear brake and turn lampYellow-Black

1978 Ford Truck Column Connection

Color Wire 
Green-RedRear left turn/Stop lamp
OrangeRear right turn/Stop lamp
Green-WhiteFront left turn lamp
White-BlueFront right turn lamp
White-RedHazard flasher
Light BlueTurn signal flasher
Dark BlueHorn
Yellow-BlueHorn circuit
Thick GreenBrake light switch
Blue-RedIndicator lamp

1999 To 2016 Ford Super Duty F550, F450, F350, And F250 Super Duty

Pin Wire Color 
1Left turn signal

(Passenger Side) 

Light Green/ Orange 
2Right turn signal 

(Driver Side) 

Orange / Light Blue
4License & Park light Brown
5Reverse light wireBlack / Pink
6Ground wireBlack
– CHMSL wireGreen


Color FromTo
YellowBrake wirePin-1
GreenBrake wirePin-2
BrownTail wirePin-4
WhiteGround wirePin-6


1996-2004 Ford Mustang 

Color Wire (Driver Side)
Orange Turn signal 
Brown Parking light
Black Ground


Color Wire (Passenger Side)
GrayTurn signal
BrownParking lights

Ford Turn Signal Wiring Diagram 

In the body Control module, Ford uses FET transistors. These transistors control turn signals. They also control other functions in the BCM (Body Control Module). Damage to FET requires replacing it. 

As we said earlier, the diagram of the turn signal and BCM should be on your car manual. We are showing some of the diagrams of Ford vehicles. The Diagrams will help you understand replacing the turn signal wiring harness.


1948 – 1956 F1, F100 & Larger F-Series Trucks 

1948 - 1956 F1, F100 & Larger F-Series Trucks



Ford F Series Pickup (1967-1972)

Ford F Series Pickup (1967-1972)



1999 To 2016 Ford Super Duty F550, F450, F350, And F250 Super Duty

1999 To 2016 Ford Super Duty F550, F450, F350, And F250 Super Duty


Installing Turn Signal Switch On F-150

Ford’s turn signal is an outstanding technology in the automotive world. It not only guides you but also makes others aware of your turning. If you are a good driver, you must use this device.

You are probably reading this article because you must change the turn signal switch. But, you got confused about the different color wires of the turn signal.

We have already shown you how you can solve the color wire puzzle. Now let’s see how you can reinstall your turn signal switch on your F-150. 

  • The tools you need are a ratchet, a 7/32” socket, an 8mm socket, a pick, a flat head screwdriver, an 8mm wrench, a T50 Torx bit, and two jaw pullers. 
  • Firstly, you need to disconnect the battery cables. To probe the terminals, use the flathead screwdriver.
  • Pull out and uncover the fuse box to remove the red 10 amp fuse. You will find it underneath the glove box on the passenger side. 
  • Now you have to remove the steering wheel. You can do it by unscrewing 8mm bolts inside the plastic cover of the steering column.
  • To remove the steering wheel fully, you must detach the harness, the bottom tab, the T50 bolt, and the 7/32” bolt.
  • Pull down the bottom trim piece of the column to remove the old turn signal. 
  • Remove the 7/32” bolts from the top and bottom trim pieces. Then disconnect the three wiring harnesses of the turn signal switch.
  • Finally, you need to install the new turn signal switch. Connect the harness with the new switch and reinstall everything you disconnected. 

You will find a new turn signal switch for your Ford F150 on Amazon.

Replacing Turn Signal Bulb On F-150

Using a turn signal is safe for you and the other drivers around you. So, change the turn signal bulb as soon as possible if it goes bad. You can buy a turn signal bulb for your F150 on amazon.

Replacing the turn signal bulb is very simple. You do not have to go to a workshop to change it. Let’s see how you can do it by yourself.

  • Firstly, you must remove the rubber seal placed by one plastic screw. 
  • Secondly, you need to detach the headlight. Remove the two bolts from the top of the headlight. 
  • Thirdly, disconnect the electrical connection from the headlight. Now turn the tail light counterclockwise to detach and separate it from the assembly. 
  • Finally, you need to install the new bulb. Press the bulb into the assembly, then put it back into the headlight. 

People Commonly Ask 

What Gives The Power To Turn Signal?

A car’s turn signal primarily gets its power from the ignition switch. Also, the ignition switch provides power to electronic accessories, engines, and ignition. 

Does The Turn Signal Affect The Brake Signal? 

The turn signal can affect the brake signal switch if the turn signal light and brake signal light use the same wire and bulb. Turn the signal and override the brake switch while turning. 

Why Is My Rear Turn Signal Not Working?

The rear turn signals may not work if you have a defective bulb or damaged flasher relay. Check your fuse box. If you find any fused fuse, change it with the bulb.

Is The Turn Signal Similar To A Hazard Flasher?

The turn signal and the hazard or emergency flasher are not the same. However, they use the same bulb and flasher to reduce the number of parts in a car system. 

Which Color Is Running-Lite In A Turn Signal? 

On average, the blue wire is the running lite. The black wire is the ground wire, the green wire is the right turn signal, and the brown wire is the left turn signal. 

Finally, Which Color For Which Wire? 

Connecting the correct wire to the pin and harness of the turn signal is essential. Otherwise, your turn signal will not work. Also, it will hamper your car’s other functions, like the ignition and brake system

Ford turn signal wire colors is not as confusing as you think. Though the wire color changed through the years, some basic coloring is the same. For example, Black is for the ground wire.

The colors are based on the front, back, left, and right turn signals. All you need to do is to read the manual carefully. We hope our article will help you remove your confusion regarding your Ford vehicle’s turn signal wire colors. 

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