Ford Fuel Pump Wires Color Codes [F150, F250 & F350] (2024)

You should know the Ford fuel pump wires color codes before performing any DIY repairs on the wiring. This is because the fuel pump is an important part of your vehicle’s fuel injection system. It will be challenging to connect the wires without technical knowledge of the color scheme.

My guide contains sections stating the fuel pump wires color codes for Ford F150, F250, and F350.

Also, expect to see answers to frequently asked questions related to the topic as you approach the end of this article.

Ford Fuel Pump Wires Color Codes [F150, F250 & F350] (1)


  • 1 Ford F150 Fuel Pump Wires Color Codes (Single Fuel Tank)
    • 1.1 Pink/Black
    • 1.2 Black
    • 1.3 Yellow / White and Black / Orange
  • 2 Ford F250 Fuel Pump Wires Color Codes (Single Fuel Tank)
  • 3 Ford F350 Fuel Pump Wires Color Codes (Single Fuel Tank)
    • 3.1 Black-Striped Pink
    • 3.2 Orange
    • 3.3 Yellow/White
    • 3.4 Black/Orange
  • 4 Ford Fuel Pump Wires Color Codes for Vehicles with Dual Fuel Tank
    • 4.1 Fuel Pump Relay
    • 4.2 Selector Switch for the Fuel Tanks
    • 4.3 Fuel Pump of the Front Tank
    • 4.4 Fuel Pump of the Rear Tank
  • 5 Ford Fuel Pump Wires Color Codes – FAQs
    • 5.1 How Do You Hotwire a Ford Fuel Pump?
    • 5.2 What Sends Power to the Fuel Pump?
    • 5.3 What Happens When a Fuel Pump Is Wired Wrongly?
    • 5.4 What Fuse Goes to the Fuel Pump?
    • 5.5 How Do You Test a Fuel Pump Wire?
  • 6 Final Thoughts

Ford F150 Fuel Pump Wires Color Codes (Single Fuel Tank)

All F150 trim levels use the same type of fuel pumps. See the F150 Ford wiring color codes below.


It gives your truck’s pump motor inertia switch a +12-volt supply.


It provides the return passage of the motor’s electrical current or supplies ground connection. The circuit has a 20 amp fuse and fuel pump relay to direct the operation of the pump from the powertrain control module (PCM) and protect it.

Yellow / White and Black / Orange

The fuel pump features a sending module that measures the tank’s fuel level. The unit also transmits signals for the fuel level to be displayed on the dash. Your F150 fuel pump’s wiring harness has two cables dedicated to the sending unit. A yellow/white cable transmits signals to the dashboard’s instrument cluster to display fuel level, while a black / orange cable is the sending module’s ground.

Note: Aftermarket fuel pump wiring color codes are different.

Ford F250 Fuel Pump Wires Color Codes (Single Fuel Tank)

The Ford F250 offers dual and single fuel tank options. The single fuel tank option bears similarities to that of the Medium-Duty option of the F150, including fuel pump wires color codes.

Ford Fuel Pump Wires Color Codes [F150, F250 & F350] (2)

Ford F350 Fuel Pump Wires Color Codes (Single Fuel Tank)

The F350 single fuel tank has four wires (two for the fuel level sender module), as explained below.

Black-Striped Pink

This wire carries 12 volts of power. It gets heated when cranking your engine to start.


The orange cable is the ground for the wiring.


It enables the dashboard’s instrument cluster to show your truck’s fuel levels.


This links the ground in completing the sender unit’s circuit. There is a relay unit pump relay that triggers it to turn on and off in line with the signal sent by the PCM when the engine is started.

Read more: Ford F150 Radio Wiring Harness Diagram

Ford Fuel Pump Wires Color Codes [F150, F250 & F350] (3)

Ford Fuel Pump Wires Color Codes for Vehicles with Dual Fuel Tank

Ford trucks also have dual fuel tanks, apart from single fuel tanks. The vehicle having dual fuel tanks means that there are two fuel pumps. You can choose between any of the two fuel pumps using the dashboard’s selector switch.

Ford Fuel Pump Wires Color Codes [F150, F250 & F350] (4)

Fuel Pump Relay

The unit has four colored wires, as described below.


This cable gets the power to the relay coil from the PCM.


It is linked to a 20 amp fuse.

Deep Green/Yellow

The deep green/yellow wire is a typically open relay contact powered when the engine is working. It gets 12 volts.

Light Blue/Orange

It is a PCM relay control cable that transmits signals to a relay coil for de-energizing or energizing.

Selector Switch for the Fuel Tanks

This switch is located inside the vehicle’s cabin on the driver’s side. It lets you choose between the rear or front tank with six cables to control its workings, as described below.


This wire switches the pump of the front tank on.


It powers the rear tank pump.

Yellow/Light Blue

This is for the rear tank’s sender module.

Deep Blue/Yellow

It is for the front tank’s sender unit.


It connects the dashboard’s instrument cluster to the front and rear sender units based on the chosen tank.


The red/yellow cable obtains +12 volts from the fuel pump relay. It is attached to the inertia switch.

Fuel Pump of the Front Tank

There are four wires for this fuel pump and the sender unit, as explained below.


It sends power to the fuel pump.


This aids the pump ground in finishing its circuit.

Deep Blue/Yellow

The deep blue/yellow cable links the dashboard’s instrument cluster with the fuel level sender module.


This is the ground wire, facilitating a return passage for the sender unit’s current.

Fuel Pump of the Rear Tank


It is for supplying +12 volts of power via the same passage as the front fuel pump.


This is the ground to the brown/white cable.

Yellow/Light Blue

It carries return signals from the fuel level sender module to the instrument cluster.


This is the ground to the yellow/light blue cable.

Read more:

Ford Fuel Pump Wires Color Codes – FAQs

How Do You Hotwire a Ford Fuel Pump?

Ford fuel pump hotwiring can be done in the following ways:

  • Using a self-test connector

The point for the fuel pump test in the self-test connector is circuit 926 (an orange-striped light blue wire). Start the process by grounding that point. Switch the ignition on after to make the fuel pump relay start working. This will make the fuel pump the vehicle’s tank switch selected to turn on.

  • Jumping Pin 2 to Pin 6

Use a self-test plug to jump pin 2 to pin 6. The issue may be ground-related, provided that you did the jump and the pumps weren’t activated even with power being at the switch. The fuel pumps and senders are attached to ground G100, which can be found on the radiator support (driver’s side).

What Sends Power to the Fuel Pump?

A vehicle’s fuel pump is powered by its battery via a sequence of parts and their links. The process starts from the pump’s fuse and continues through the ignition switch, ECM (engine control module) relay, ECM, and fuel pump relay.

What Happens When a Fuel Pump Is Wired Wrongly?

A fuel pump won’t be activated or won’t supply adequate fuel to the engine if it isn’t properly installed. The engine may run rough or fail to start up—or it will lose fuel efficiency and power.

What Fuse Goes to the Fuel Pump?

The fuse that goes to the fuel pump is typically a 15 (blue), 25 (clear), or 20 (yellow).

How Do You Test a Fuel Pump Wire?

Follow the steps below to test the fuel pump wire.

Step 1: Detach the connector pins on top of the pump.

Step 2: Use a multimeter to assess the voltage of the ground and power terminals. The problem may be a damaged wire if the reading indicates 0 volts instead of 12 volts at the fuel pump terminal.

Do the following to be sure that the fuel pump isn’t receiving power:

Step 1: Link the multimeter’s negative lead to a well-functioning ground in the vehicle frame.

Step 2: Attach the positive lead to the fuel pump’s power terminal. The fuel pump isn’t receiving power if you get a reading of 0 volts.

A corroded terminal will cause the voltage to drop across the terminals. Your multimeter will indicate 10 volts or 9 volts in place of 12 volts. You will know it is a corroded terminal when the voltage drop is more than 1 volt.

Final Thoughts

Figuring out the fuel pump wires color codes of your Ford F150, F250, and F350 should be easy with this guide. Let an expert handle the repair work if you still find the unit’s wiring confusing. You may end up creating another problem if you get the connection wrong.

Ford Fuel Pump Wires Color Codes [F150, F250 & F350] (2024)


What color is the fuel pump wire on a 1995 Ford F150? ›

The power feed from the fuel pump relay to the inertia switch is the dark green/yellow wire and it comes out of the inertia switch to the pump on the Pink/black wire.

What is the code for the fuel pump? ›

The P0230 code indicates an issue with the fuel pump. This generic code indicates that there's an issue with the circuit between the fuel pump and the powertrain control module (PCM).

What is the blue wire on a fuel pump? ›


BLACK: Once the Battery Pigtail is connected to the (-) terminal of the battery, every black wire in the harness is connected to full-time ground. BLUE: The blue wire is a key switched 12v+ trigger for the relay. Anytime you want the pump running, the blue wire should have 12v+.

What is the 6.7 Ford fuel pump lawsuit? ›

The Ford 6.7 diesel lawsuit states that Ford knew that the design of the CP4 pumps was not compatible with diesel fuel and the engine produces metal shavings regardless of fuel quality.

What color is diesel fuel pump? ›

Green. Without further ado, let's dive in. Again, it's important that we emphasize that the colors of the gas pump may mean something different depending on the gas station you are at. Most of the time, however, when you see a green-handled gas pump, you can expect that it is a diesel pump.

What happens when you wire a fuel pump wrong? ›

What Happens If A Fuel Pump Isn't Installed The Right Way? If a fuel pump isn't installed correctly, it either won't work at all or won't supply enough fuel to the engine. When the fuel pump isn't working right, your engine isn't getting the amount of fuel it needs to run well.

What is the code P0171 for the fuel pump? ›

What Is the P0171 Code? Can I Still Drive? A P0171 code is set by your vehicle's powertrain control module (PCM) when it detects that the air-to-fuel ratio of your vehicle is too lean. This means that the PCM is relaying that the engine is receiving too much air into the combustion chamber and not enough fuel.

What is the EVAP code for fuel pump? ›

The P0455 diagnostic trouble code appears when there's a leak in the Evaporative Emission Control (EVAP) system, and the system can't maintain pressure. The EVAP system usually consists of five main components: the fuel tank, fuel cap, vent valve, purge valve, and the evaporative canister (or charcoal canister).

What is the code for fuel pump circuit high? ›

The P0232 code stands for “Fuel Pump Secondary Circuit High,” which means the powertrain control module has detected an incorrect signal to or from the fuel pump. Some common causes of the P0232 code include a bad fuel pump relay, fuel pump failure, and wiring issues.

What color are the fuel pump wires? ›

On the fuel pump you have three wires yellow/red, black/white/ and red/black. On the wiring harness you have three also Green , Brown, and Brown and black. they hook up Green=Black/white (ground wires) , Brown=Yellow,red (power wire for fuel pump), and Brown/black=red/black (low fuel light). ;-) Happy Riding!!

What do I connect the blue wire to? ›

The blue wire also referred to as the neutral wire, has the function of transferring electricity away from the appliance. The brown wire, otherwise known as the live wire, transfers electricity to the appliance. The combination of these wires is referred to as a circuit.

What color is the blue wire? ›

Plug wiring colours
EarthYellow and Green

What is the fuel pump problem with the 6.7 Powerstroke? ›

When the CP4 pump fails, it will shed tiny particles of metal throughout the entire high pressure fuel system, causing a number of serious 6.7 Powerstroke problems. The only cure in this case is to replace everything in the high pressure fuel system - CP4 pump, fuel injectors, injection lines, fuel rails, etc.

What is the Ford f250 super duty lawsuit? ›

Class action attorneys began filing Ford truck roof lawsuits following a $1.7 billion jury verdict against Ford in the wrongful deaths of Melvin Hill, 74, and his wife, Voncile Hill, 62. The deaths occurred in a 2014 Georgia rollover crash of a 2002 Ford F-250 Super Duty truck.

How do you prevent CP4 failure 6.7 Powerstroke? ›

Replace the problematic CP4 with a failure-proof DCR pump

Our top pick, and the only 100% failure proof solution is to replace the problematic pump with S&S Diesel's Ford 6.7 CP4 to DCR Fuel Pump Conversion Kit.

What is the red wire on a pump? ›

Your red wire is controlling the "call" for the pump to turn on. You should only need the power and the control wire to go down to the pump.

What light comes on with a bad fuel pump? ›

Modern vehicles are equipped with onboard diagnostics that can detect fuel system issues. If your check engine light comes on and the diagnostic code points to a problem with the fuel system, including the fuel pump, it's essential to address it promptly to prevent further damage.

What color is the gas pump for gasoline? ›

Buyers of E-85 (85 percent ethanol) gasoline blends can potentially be caught in this situation as well because yellow pump nozzles are often used to dispense this type of fuel. Gasoline is routinely dispensed through nozzles that may be red, white, blue, black, green or almost any color of the rainbow.


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