2003 Ford F150 Interior Fuse Box Identification. Below you will find an image of the interior or central junction box. Each component is identified and there is a legend below. Clicking on the image will enlarge it.
Fuse Legend
1 (15A) – Radio, Video Cassette Player, Rear Seat Entertainment (RSE) Module, Rear Integrated Control Panel (RICP).
2 (5A) – Instrument Cluster, Powertrain Control Module (PCM), Electronic Automatic Temperature Control (EATC) Module, Natural Gas Vehicle (NGV) Timer Jumper.
3 (20A) – Data Link Connector (DLC), Cigar Lighter (Front).
4 (5A) – Mirror Turn Signal Relay (Left & Right), Exterior Rear View Mirror Switch.
5 (15A) – Digital Transmission Range (DTR) Sensor, Reversing Temps Switch, Speed Control Servo, Function Selector Switch Assembly, Temperature Blend Door Actuator, Daytime Running Lamps (DRL) Relay 1.
6 (5A) – Generic Electronic Module (GEM), Brake Shift Interlock, Instrument Cluster.
7 (N/A) – Not Used.
8 (5A) – Generic Electronic Module (GEM), Radio, Video Display, Video Cassette Player.
9 (N/A) – Not Used.
10 (N/A) – Not Used.
11 (30A) – Windshield Washer Relay, Wiper Run/Park Relay, Wiper High/Low Relay, Windshield Wiper Motor.
12 (N/A) – Not Used.
13 (20A) – Indicator Flash Relay, Brake Pedal Position Switch.
14 (15A) – Battery Saver Relay, Interior Lamp Relay.
15 (5A) – Generic Electronic Module (GEM), Brake Pressure Switch, Brake Pedal Position Switch.
16 (20A) – Instrument Cluster, Headlamp (Left & Right).
17 (N/A) – Not Used.
18 (5A) – Main Light Switch.
19 (N/A) – Not Used.
20 (5A) – Powertrain Control Module (PCM), Generic Electronic Module (GEM), Radio.
21 (15A) – Clutch Pedal Position Switch, Clutch Triple Function Switch Jumper, Central Junction Box (CJB), Digital Transmission Range (DTR) Sensor.
22 (10A) – Restraints Control Module, Passenger Air Bag Deactivation (PAD) Switch.
23 (10A) – Trailer Tow Relay (Battery Charge), 4×2 Center Axle Disconnect Solenoid, 4×4 Center Axle Disconnect Solenoid, Indicator Flasher Relay, Transfer Case Electric Clutch Relay, Mechanical Shift on the Fly (MSOF) Relay, ABS Control Module, Heated Seat Module (Driver & Passenger Front), Seat Heater Switch (Driver & Passenger), Overhead Console, Electrochromatic Inside Mirror Unit.
24 (10A) – Function Selector Switch Assembly, Blower Motor Relay, Electronic Automatic Temperature Control (EATC) Module.
25 (10A) – Heated Mirrors.
26 (10A) – Headlamp (Right).
27 (5A) – Main Light Switch.
28 (10A) – Headlamp (Left).
29 (5A) – Transmission Control Switch, Autolamp Sensor, Central Security Module, Belt Minder Module.
30 (30A) – PCM Power Diode, Ignition Transformer Capacitor 1, Ignition Coil, Natural Gas Vehicle (NGV) Timer Jumper, Instrument Cluster, Passive Anti-Theft Transceiver Module.
31 (N/A) – Not Used.