In this article, we will provide a detailed overview of the 1999 Ford F250 fuse box diagram, explaining its layout and the functions of each fuse, enabling you to identify and troubleshoot electrical issues effectively.
Let’s get started.
Table of Contents
Standard fuse amperage rating and color
| COLOR | |||||
| Fuse Rating | Mini Fuses | StandardFuses | Maxi Fuses | CartridgeMaxiFuses | Fuse LinkCartridge |
| 2A | Grey | Grey | — | — | — |
| 3A | Violet | Violet | — | — | — |
| 4A | Pink | Pink | — | — | — |
| 5A | Tan | Tan | — | — | — |
| 7.5A | Brown | Brown | — | — | — |
| 10A | Red | Red | — | — | — |
| 15A | Blue | Blue | — | — | — |
| 20A | Yellow | Yellow | Yellow | Blue | Blue |
| 25A | Natural | Natural | — | — | — |
| 30A | Green | Green | Green | Pink | Pink |
| 40A | — | — | Orange | Green | Green |
| 50A | — | — | Red | Red | Red |
| 60A | — | — | Blue | — | Yellow |
| 70A | — | — | Tan | — | Brown |
| 80A | — | — | Natural | — | Black |
1999 Ford F250 Fuse Box Diagram (Power Distribution Box)
In the engine compartment near the brake master cylinder, you will find the power distribution box, trailer tow, and electronic shift-on-the-fly relay blocks. These crucial components play a vital role in managing and controlling various electrical systems of your vehicle.
The power distribution box is equipped with high-current fuses designed to safeguard your vehicle’s main electrical systems from potential overloads. These fuses act as protective barriers, preventing damage to sensitive electrical components.
If you ever disconnect and reconnect the battery, it is essential to consult the Battery section of the Maintenance and Care chapter. This section provides valuable guidance on the proper procedures to follow, ensuring the safe and efficient reconnection of the battery.
How to open the hood of the 1999 Ford F250?
- Inside the vehicle, pull the hood release handle located under the bottom left corner of the instrument panel.
- Go to the front of the vehicle and release the auxiliary latch located under the right center of the hood.
Slide the handle to release the auxiliary latch. - Lift the hood until the lift cylinders hold it open.
| Fuse/Relay Location | Fuse AmpRating | Description |
| 1 | 7.5A * | Trailer Tow Left Stop/Turn Lamp |
| 2 | 10A* | Air Bag Module |
| 3 | 7.5A* | Trailer Tow Right Stop/Turn Lamp |
| 4 | 20A* | Trailer Tow Backup Lamps, Trailer Tow Park Lamps |
| 5 | 20A*(Gasoline only)5A* (Diesel only) | Gasoline only-PCM, Two Speed Fuel PumpRelay Coil, Fuel Pump Relay Coil, Mass AirFlow Sensor, Fuel InjectorsDiesel only-Dual Alternator A Field |
| 6 | -(Gasoline only)10A*(Diesel only) | Gasoline only-Not UsedDiesel only-Single or Dual Alternator AField, Regulator |
| 7 | 20A*(Gasoline only)5A* (Diesel only) | Gasoline only-Vapor Managment Valve,HEGO Sensors, Intake ManifoldCommunication Control, EVR Solenoid,PCM, Canister Vent SolenoidDiesel only-Dual Alternator A Field |
| 8 | 15A* | Trailer Tow Electronic Brake Illumination,Park Lamps, Trailer Tow Park Lamp RelayCoil |
| 9 | 10A* | Left Headlamp |
| 10 | 25A* | Power Point |
| 11 | 10A* | Right Headlamp (Low Beam) |
| 12 | 10A* | Daytime Running Lamps (DRL) Resistor |
| 13 | 30A** | Multi-function Switch, Headlamps |
| 14 | 60A** | Anti-Lock Brake System |
| 15 | 30A** | Windshield Wiper Motor |
| 16 | 30A** | Trailer Tow Battery Charge |
| 17 | 30A** | Electronic Shift On The Fly Relay, Transfer Case Shift Motor |
| 18 | 30A** | Power Seat |
| 19 | 20A** | Fuel Pump Motor, PCM |
| 20 | 50A** | Ignition Switch (B4 & B5) |
| 21 | 50A** | Ignition Switch (B1 & B3) |
| 22 | 50A** | Instrument Panel Junction Box |
| 23 | 40A** | Blower Motor |
| 24 | 30A** | Power Distribution Box |
| 25 | 30A*** | Power Windows |
| 26 | 20A** | If equipped with Remote KeylessEntry-Driver Door Unlock Relay Coil, AllDoor Unlock Relay Coil, All Door Lock Relay Coil, Park Lamp Flash Relay, If not equipped with Remote Keyless Entry-Power Door Lock Motors |
| 27 | -(Gasoline only)30A*(Diesel only) | Gasoline only-Not UsedDiesel only-Injector Driver Module |
| 28 | 30A** | Trailer Tow Electronic Brake Controller |
| 29 | 20A** | Radio |
| 30 | — | PCM Power Relay |
| 31 | — | Blower Motor Relay |
| 32 | — | Two Speed Fuel Pump Relay (Gasoline only), Injector Driver Module Power Relay (Diesel only) |
| 33 | — | Washer Pump Relay |
| 34 | — | Windshield Wiper Park/Run Relay |
| 35 | — | Windshield Wiper HI/LO Relay |
| 36 | — | Not Used |
| 37 | — | PCM Relay Diode |
| 38 | — | Trailer Tow Backup Lamp Relay |
| 39 | — | Trailer Tow Battery Charge Relay |
| 40 | — | Electronic Shift On The Fly Relay #1, Electronic Shift On The Fly Relay #2 |
| * Mini Fuses ** Maxi Fuses ***Circuit Breaker | ||
1999 Ford F250 Passenger Compartment Fuse Panel Diagram
The passenger compartment fuse panel is located below and to the left of the steering wheel by
the brake pedal. Remove the panel cover to access the fuses.
To remove the fuse panel cover, turn the panel fasteners counterclockwise.
To remove a fuse use the fuse puller tool provided on the fuse panel cover.
| Fuse/Relay Location | Fuse AmpRating | Description |
| 1 | 20A | Electronic Flasher |
| 2 | 5A | Instrument Cluster, Powertrain Control Module (PCM) Keep Alive Memory |
| 3 | 20A | Cigar Lighter, OBDII |
| 4 | 10A | Glove Box Lamp, Map Lamps, Power Mirrors, Underhood Lamp |
| 5 | — | Not Used |
| 6 | — | Not Used |
| 7 | 5A | Power Window Lock Switch Illumination |
| 8 | 5A | Radio, Headlamp Switch Illumination |
| 9 | — | Not Used |
| 10 | — | Not Used |
| 11 | 10A | Washer Pump, Wiper Run/Park Relay Coil,Wiper Hi/LO Relay Coil, Washer Pump Relay Coil |
| 12 | 15A | Horn |
| 13 | 20A | Stop Lamps, Center High-mount Stop Lamp, Trailer Tow Stop Lamp |
| 14 | 10A | Dome Lamp, Cargo Lamp, Courtesy Lamps |
| 15 | 5A | Generic Electronic Module (GEM),Powertrain Control Module (PCM),Anti-lock Brake System (ABS) Module,Brake Shift Interlock, Speed Control |
| 16 | 15A | Instrument Cluster, Hi-beam Headlamps |
| 17 | — | Not Used |
| 18 | — | Not Used |
| 19 | 10A | Auxiliary Powertrain Control Module(APCM) (Diesel only), Instrument Cluster,GEM Module, Overdrive Cancel Switch, IdleValidation Switch (Diesel only), Overhead Console |
| 20 | 15A | Starter Motor Relay Coil, PCM (Gasoline only) |
| 21 | — | Not Used |
| 22 | 10A | Air Bag Module, Passenger Air BagActivation Switch, Blower Motor Relay Coil |
| 23 | 10A | Electronic Flasher |
| 24 | 10A | Blend Door Actuator, Trailer Tow Battery Charge Relay Coil |
| 25 | 5A | 4-Wheel Anti-Lock Brake System (4WABS)Module |
| 26 | — | Not Used |
| 27 | 10A | Ignition Run Power Feed (Customer Access) |
| 28 | 10A | Brake Shift Interlock, DRL Relay Coil,Speed Control Module, Backup Lamps,Trailer Tow Backup Lamp Relay Coil,Electronic Shift On The Fly Hub Lock Solenoid |
| 29 | 5A | Instrument Cluster (Charge and Airbag Warning Lamps) |
| 30 | 30A | PCM Relay Coil, Ignition Coil (Gasoline only), Fuel Heater (Diesel only), WastegateSolenoid (Diesel only), Injector DriverModule Relay Coil (Diesel only) |
| 31 | — | Not Used |
| Relay 1 | — | Interior Lamp Relay |
| Relay 2 | — | Not Used |
| Relay 3 | — | Horn |
| Relay 4 | — | Power Window One Touch Down Relay |
| Relay 5 | — | Accessory Delay Relay |
Tom Smith is a passionate car mechanic and automotive enthusiast, specializing in the intricate world of car fuse boxes. With years of hands-on experience under the hood, he has earned a reputation as a reliable expert in his field. As the founder and content creator of the popular blog website 'carsfuse.com,' Tom has dedicated himself to sharing his extensive knowledge of car fuse boxes and electrical systems with the world.