Ford F-150 1999 Fuse Box Info
Fuse box location:
The fuse box is located below and to the left of the steering wheel by the brake pedal.
Engine compartment fuse box:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 15A | Audio |
| 2 | 5A | Powertrain Control Module (PCM), Cluster |
| 3 | 20A | Cigar Lighter, OBD-II Scan Tool Connector |
| 4 | 15A | Autolamp Module, Remote Entry Module, Mirrors |
| 5 | 15A | AC Clutch Relay, Speed Control Module, Reverse Lamp, Climate Mode Switch, Daytime Running Lamp Relay |
| 6 | 5A | Cluster, Brake Shift Interlock Solenoid, Rear Air Suspension Module, GEM Module |
| 7 | - | Not used |
| 8 | 5A | Radio, Remote Entry Module, GEM Module |
| 9 | - | Not used |
| 10 | - | Not used |
| 11 | 30A | Front Washer Pump Relay, Wiper Run/Park Relay, Wiper Hi/LO Relay, Windshield Wiper Motor |
| 12 | - | Not used |
| 13 | 20A | Stop Lamp Switch (Lamps), Turn/Hazard Flasher, Speed Control Module |
| 14 | 15A | Battery Saver Relay, Interior Lamp Relay, Accessory Delay Relay (Power Windows) |
| 15 | 5A | Stop Lamp Switch, (Speed Control, Brake Shift Interlock, ABS, PCM Module Inputs), GEM Module, RABS Test Connector |
| 16 | 20A | Headlamps (Hi Beams), Cluster (Hi Beam Indicator) |
| 17 | - | Not used |
| 18 | 5A | Instrument Illumination (Dimmer Switch Power) |
| 19 | - | Not used |
| 20 | 5A | Audio, GEM Module, Powertrain Control Module (PCM) |
| 21 | 15A | Starter Relay, Clutch Switch, Fuse 20 |
| 22 | 10A | Air Bag Module, Passenger Airbag Deactivation Module |
| 23 | 10A | Trailer Tow Battery Charge Relay, Turn/Hazard Flasher, 4x4 Solenoids, 4x4 Relays |
| 24 | 10A | Climate Mode Switch (Blower Relay) |
| 25 | 5A | 4 Wheel Anti-Lock Brake System (4WABS) Module |
| 26 | 10A | Right Side Low Beam Headlamp |
| 27 | 5A | Foglamp Relay and Foglamp Indicator |
| 28 | 10A | Left Side Low Beam Headlamp |
| 29 | 5A | Autolamp Module, Transmission Overdrive Control Switch |
| 30 | 30A | Passive Anti Theft Transceiver, Cluster, Ignition Coils, Powertrain Control Module Relay |
| 31 | - | Not used |
| RELAY 1 | Interior Lamp Relay | |
| RELAY 2 | Battery Saver Relay | |
| RELAY 3 | Not used | |
| RELAY 4 | One Touch Down Window Relay | |
| RELAY 5 | ACC Delay Relay |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 25A | Power Point |
| 2 | 30A | Powertrain Control Module |
| 3 | 30A | Headlamps/Autolamps |
| 4 | 15A | Air Suspension |
| 5 | 20A | Trailer Tow Backup/Park Lamps |
| 6 | 15A | Parklamps/Autolamps |
| 7 | 20A | Horn |
| 8 | 15A | Power Door Locks |
| 9 | 15A | Daytime Running Lamps (DRL), Fog Lamps |
| 10 | 20A | Fuel Pump |
| 11 | 20A | Alternator Field |
| 12 | - | Not used |
| 13 | - | Not used |
| 14 | - | Not used |
| 15 | - | Not used |
| 16 | - | Not used |
| 17 | - | Not used |
| 18 | 15A | Powertrain Control Module, Fuel Injectors, Fuel Pump, Mass Air Flow Sensor |
| 19 | 10A | Trailer Tow Stop and Right Turn Lamp |
| 20 | 10A | Trailer Tow Stop and Left Turn Lamp |
| 21 | - | Not used |
| 22 | - | Not used |
| 23 | 15A | Powertrain Control Module, HEGO Sensor, Canister Vent |
| 24 | 15A | Powertrain C ontrol Module, Automatic Transmission, CMS Sensor |
| 101 | 30A | Trailer Tow Battery Charge |
| 102 | 50/20A | Four Wheel Antilock Brake Module/Rear Wheel Antilock Brake Module |
| 103 | 50A | Junction Block Battery Feed |
| 104 | 30A | 4x4 Shift Motor & Clutch |
| 105 | 40A | Climate Control Front Blower |
| 106 | - | Not used |
| 107 | - | Not used |
| 108 | 30A | Trailer Tow Electric Brake |
| 109 | 50A | Air Suspension Compressor |
| 110 | 30A | Power Windows |
| 111 | 50A | Ignition Switch Battery Feed (Start and Run Circuits) |
| 112 | 30A | Drivers Power Seat |
| 113 | 50A | Ignition Switch Battery Feed (Run and Accessory Circuits) |
| 114 | - | Not used |
| 115 | - | Not used |
| 116 | - | Not used |
| 117 | - | Not used |
| 118 | - | Not used |
| 201 | - | Trailer Tow Park Lamp Relay |
| 202 | - | Front Wiper Run/Park Relay |
| 203 | - | Trailer Tow Backup Lamp Relay |
| 204 | - | A/C Clutch Relay |
| 205 | - | Horn Relay |
| 206 | - | Fog Lamp Relay |
| 207 | - | Front Washer Pump Relay |
| 208 | - | Not used |
| 209 | - | Front Wiper Hi/Lo Relay |
| 301 | - | Fuel Pump Relay |
| 302 | - | Trailer Tow Battery Charge Relay |
| 303 | - | Rear Air Suspension Relay |
| 304 | - | Powertrain Control Module Relay |
| 401 | - | Not used |
| 501 | - | Powertrain Control Module Diode |
| 502 | - | A/C Clutch Diode |
| 503 | - | Not used |
| 601 | - | Not used |
| 602 | - | Not used |
