Under-Dash Fuse Box Fuse And Relay Diagram (1997-1998 F150, F250, Expedition)

Location and descriptions of the fuses and relays of the under-dash fuse box for 1997-1998 Ford F150, F250 and Expedition.

The under-dash fuse/relay box is commonly referred to as the Junction Box Fuse/Relay Panel in the Ford repair service literature.

NOTE: You can find the fuse/relay diagram for the under-hood fuse box here: Under Hood Fuse And Relay Box Diagram (1997-1998 F150, F250, Expedition).

1997-1998 Ford F150, F250, Expedition (Junction Box Fuse/Relay Panel)
# Amps Fuse Name/Description
1 15 Amps
  1. Flasher Relay
2 5 Amps
  1. Instrument Cluster
3 25 Amps
  1. Cigar Lighter
4 5 Amps
  1. Park Lamp Relay
  2. Headlamp Relay
  3. Autolamp Module
  4. Remote Anti-Theft Personality (RAP) Module
  5. Power Mirror Switch
5 15 Amps
  1. Transmission Range (RT) Switch (A/T)
  2. Backup Lamp Switch (M/T)
  3. Daytime Running Lamps (DRL) Module
  4. Speed Control Servo/Amplifier Assembly
  5. Heater-A/C Control Assembly
  6. Blend Door Actuator
6 5 Amps
  1. Shift Lock Actuator
  2. Generic Electronic Module (GEM)
  3. Rear Air Suspension Module
7 --
  1. NOT USED
8 5 Amps
  1. Radio
  2. Main Light Switch
  3. Remote Anti-Theft Personality (RAP) Module
9 --
  1. NOT USED
10 --
  1. NOT USED
11 30 Amps
  1. Washer Pump Relay
  2. Wiper Run/Park Relay
  3. Wiper HI/LO Relay
  4. Windshield Wiper Motor
12 5 Amps
  1. Data Link Connector (DLC)
13 15 Amps
  1. Rear Anti-Lock Brake System (RABS) Module
  2. Brake ON/OFF (BOO) Switch
  3. Brake Pressure Switch
14 15 Amps
  1. Battery Saver Relay
  2. Interior Lamp Relay
15 5 Amps
  1. Generic Electronic Module (GEM)
16 20 Amps
  1. Instrument Cluster (W/O DRL)
  2. Daytime Running Lamps (DRL) Module
  3. Hi-Beam Headlamps (thru' Multi-Function Switch)
17 --
  1. NOT USED
18 5 Amps
  1. Park Lamp Relay
  2. Trailer Electronic Brake Controller
  3. Main Light Switch
  4. Trailer Tow Run Relay
  5. Front Park/Turn Lamps
  6. License Lamps
  7. Stop/Park/Turn Lamps
  8. Tail/Side Marker Lamps
19 10 Amps
  1. Instrument Cluster
  2. Air Bag Diagnostic Monitor
20 5 Amps
  1. Powertrain Control Module (PCM)
  2. Generic Electronic Control Module (GEM)/Central Timer Module (CTM)
21 15 Amps
  1. Clutch Pedal Position (CPP) Switch (w/o RAP)
  2. Starter Inhibit Relay (w/ RAP)
22 10 Amps
  1. Air Bad Diagnostic Monitor
  2. Passive De-Activation (PAD) Module
23 10 Amps
  1. Trailer Tow Battery Charge Relay
  2. 4x4 Hub Solenoid
  3. 4x2 Hub Solenoid
  4. Flasher Relay
  5. Shift On The Fly Relay
24 10 Amps
  1. Blower Relay
25 5 Amps
  1. 4 Wheel Anti-Lock Brake System Module
  2. 4WABS Relay
26 10 Amps
  1. Daytime Running Lamps (DRL) Module
  2. Right Headlamp
27 5 Amps
  1. Main Light Switch
  2. Fog Lamp Relay
28 10 Amps
  1. Left Headlamp
29 5 Amps
  1. Autolamp Module
  2. Instrument Cluster
  3. Transmission Control Switch (TCS)
  4. Brake Warning Resistor/Diode Assembly (W/RABS)
30 30 Amps
  1. Radio Noise Capacitor
  2. Ignition Coil
  3. PCM Power Diode
31 --
  1. NOT USED
Under-Dash Fuse Box Fuse And Relay Diagram (1997-1998 F150, F250, Expedition)

More 4.6L, 5.4L Ford Diagnostic Tutorials

There are quite a few tutorials for the 4.6L and 5.4L equipped Ford F150, F250 pick-ups and Expedition SUV. You can check them out in this index:

  1. Ford 4.6L, 5.4L Index of Articles.

Here's a small sample of the tutorials you'll find in the index:

  1. How To Clean The Ford MAF Sensor (Ford 4.2L, 4.6L, 5.4L).
  2. How To Test The Fuel Injectors (1997-2002 4.6L F150).
  3. How To Test The Ford EGR Valve EGR Vacuum Solenoid, DPFE Sensor.
  4. How To Test The Ford MAF Sensor (4.2L, 4.6L, 5.4L).
  5. How To Test The 4.6L, 5.4L Ford Throttle Position Sensor (TPS).
buy me a beer

If this info really saved the day, buy me a beer!