Ford F-150 1997 Fuse Replacement
Having an electrical issue? It could be a blown fuse — an easy fix you can do yourself.
Follow the steps below to find and replace the fuse:
Step 1: Find the Fuse Box
In your Ford F-150 1997, the interior fuse box is typically located under the dashboard on the driver's side. Some vehicles also have an additional fuse box in the engine compartment. Check your owner's manual or the fuse box cover for the exact location.
Step 2: Identify the Corresponding Fuse
Below is the complete fuse list for your vehicle. Find the circuit that isn't working and note the fuse number and amperage.
Instrument panel Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | Heater/Air conditioner blower | 30 |
| 2 | Wiper/Washer | 30 |
| 3 | Idle position switch (Diesel) | 3 |
| 4 | Exterior lamps; Instrument illumination; Trailer exterior lamp relay; Warning buzzer/chime module | 15 |
| 5 | Air bag restraint | 10 |
| 6 | Air conditioner clutch; Diesel auxiliary fuel selector; Remote keyless entry | 15 |
| 7 | Turn lamps | 15 |
| 8 | Courtesy/dome/cargo lamps; Electric outside mirrors; Keyless entry; Speedometer; Sun visor mirror illumination; Warning buzzer/chime module | 15 |
| 9 | Power point | 25 |
| 10 | Instrument illumination | 4 |
| 11 | Radio; Radio display dimmer | 15 |
| 12 | Electronic shift motor 4-wheel drive; Power door locks; Power driver seat; Power lumbar | 20 |
| 13 | Anti-lock brakes; Brake shift interlock; Electronic engine control; Speed control; Stop/hazard lamps; Stop sense for electronic engine control | 15 |
| 14 | Power windows | 20 |
| 15 | Anti-lock brakes | 20 |
| 16 | Cigarette lighter; Generic Scan Tool | 15 |
| 17 | Diesel indicators; Electronic transmission; Gauges; Tachometer; Warning buzzer/chime module; Warning indicators | 10 |
| 18 | Air bag restraint; Automatic day/night mirror; Brake shift interlock; Electronic shift module 4-wheel drive; Speedometer; Selectable RPM control (Diesel); Speed control (Diesel) | 10 |
Engine compartment Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | Audio power | 20 |
| 2 | Fog lamps; 200A alternator (Diesel ambulance only) | |
| 3 | Daytime running lamps (Canada only); Headlamp flash-to-pass; Horn | 30 |
| 4 | Trailer back-up lamps; Trailer running lamps | 25 |
| 5 | Back-up lamps; Daytime running lamp module (DRL) (Canada only); Oxygen sensor heater; Trailer battery charge relay | 15 |
| 6 | Trailer right-hand stop/turn lamp | 10 |
| 7 | Trailer left-hand stop/turn lamp | 10 |
| 8 | Injector driver module | 30 |
| 9 | Powertrain control system | 30 |
| 10 | Instrument panel fuses: 15,18; Starter relay coil | 20 |
| 11 | Not used | |
| 12 | Powertrain control system relay coil | |
| 13 | Instrument panel fuses: 5,9,13 | 50 |
| 14 | Not used | |
| 15 | Instrument panel fuses: 1, 7; Power distribution box: fuse 5 | 50 |
| 16 | Fuel pump feed (Gas engine) | 20 |
| 17 | Alternator charge lamp; Idle position switch (Diesel); Instrument panel fuses: 2, 6, 11,14,17; Power distribution box: fuse 22 | 50 |
| 18 | Trailer battery charge | 30 |
| 19 | Headlamps | 40 |
| 20 | Instrument panel fuses: 4, 8, 12,16 | 50 |
| 21 | Trailer brake feed | 30 |
| 22 | Distributor pickup (Gas engine); Fuel line heater (Diesel); Glow plug controller (Diesel); Ignition coil (Gas engine); Powertrain control system relay coil; Thick film integrated (TFI) module (Gas engine) | 20 |
| Relay1 | Powertrain control system | |
| Relay2 | Fuel pump (Gas engine); Injector driver module (IDM relay) (Diesel) | |
| Relay3 | Horn | |
| Relay4 | Trailer tow lamps | |
| Relay5 | Anti-lock brake system (ABS) pump motor |
Step 3: Check the Fuse
Use the plastic fuse puller, typically found in the fuse box, to remove the fuse. Hold it up to a light source. If the metal filament inside is broken or charred, the fuse is bad and needs to be replaced.
Step 4: How to Get a Replacement
You can buy a replacement fuse at any auto parts store. Make sure you match the **amperage (A)** and **physical size** of the fuse exactly. For example, if you need a 20A fuse, get a 20A fuse.
Step 5: Replace the Fuse
Gently press the new fuse into the empty slot. You should feel a slight click when it's securely in place. Test the affected circuit to confirm it's working again.
What Now?
Fuse Was Blown — What to Buy
Ask at any auto parts store (AutoZone, O'Reilly, Advance Auto) for a blade fuse with the same amperage printed on the old one (e.g., 10A, 15A, 20A). Also match the physical size — mini (most modern cars), standard, or maxi. Replacement fuses cost under $5 and most stores sell assorted packs.
Fuse Looks Fine — Other Causes
If the fuse is intact, the problem isn't a blown fuse. Common alternatives include a bad relay (a click-sized electrical switch), a faulty wiring connection, or a failed component (motor, switch, module). At this point, a mechanic's diagnostic is the most reliable next step.
Frequently Asked Questions
What happens if I put in the wrong amperage fuse?
Higher amperage fuses won't protect the circuit and can cause wiring damage or fire. Lower amperage fuses will blow again immediately. Always match the exact amperage.
Why does my fuse keep blowing?
A repeatedly blown fuse indicates an underlying short circuit or overload. Replacing it again won't fix the root cause — consult a mechanic.
Do I need any tools?
Most cars come with a plastic fuse puller in the fuse box lid. If not, fine-tip needle-nose pliers work. A small flashlight helps.
How do I know what size fuse to buy?
Match the amperage printed on the old fuse (e.g., 10A, 15A, 20A) and the physical blade size (mini, standard, maxi). Auto parts stores carry assorted packs.