Your radio just died, the power outlet won’t charge your phone, or the trailer lights went dark in a parking lot. Nine times out of ten, the fix is a 50-cent fuse. The hard part is finding the right one.
This guide shows where every F-150 fuse box is from 1997 to 2026, how to get to it, and how to read the Ford F-150 fuse box diagram for your exact year. It also covers how to test and replace a blown fuse safely, and what it means when one keeps blowing.
Quick answer: Where is the fuse box on a Ford F-150? Every F-150 has at least two fuse boxes. On 2004–2026 trucks, the passenger compartment fuse panel is on the right side of the passenger footwell, behind a trim panel or kick panel, and a second box (or, on 2004–2008, an auxiliary relay box) is under the hood. On 1997–2003 trucks, the interior panel is below and to the left of the steering wheel near the brake pedal, with a power distribution box under the hood.
Find Your F-150 Generation
The fuse layout changes with every generation, and sometimes within one, so start by finding your truck’s years below. Then jump to that section.
| Years | Generation | Interior fuse panel | Under-hood box | Jump to |
|---|---|---|---|---|
| 2021–2026 | 14th | Right side of passenger footwell, behind trim panel | Power distribution box, engine compartment | 2021–2026 section |
| 2015–2020 | 13th | Right side of passenger footwell, behind trim panel | Power distribution box, engine compartment | 2015–2020 section |
| 2009–2014 | 12th | Under right side of instrument panel (passenger footwell) | Power distribution box, engine compartment | 2009–2014 section |
| 2004–2008 | 11th | Under right side of instrument panel (passenger kick panel); this is also the power distribution box | Auxiliary relay box on left fender | 2004–2008 section |
| 1997–2003 (and 2004 Heritage) | 10th | Below and left of steering wheel, by brake pedal | Power distribution box, engine compartment | 1997–2003 section |
Not sure of your year? It’s the 10th character of your VIN, and it’s printed on the driver’s door jamb sticker and your registration.
Note for your web developer: set each generation H2’s anchor ID to match the jump links above.
Before you use any fuse table below: Fuse numbers can change between model years, trims and engines, even within one generation. Each table below is for the year named. Always confirm against the fuse chart in your truck’s owner’s manual or on the fuse box cover. Never install a fuse with a higher amp rating than specified.
2021–2026 Ford F-150 Fuse Box Diagram (14th Generation)
The 14th-gen F-150 has two main fuse boxes: the passenger compartment fuse panel, which works with the body control module (BCM), and the power distribution box under the hood. This section covers gas and PowerBoost hybrid trucks. The all-electric F-150 Lightning uses a different layout, so use its own owner’s manual.
Where are the fuse boxes on a 2021–2026 F-150?
Passenger compartment fuse panel: on the right-hand side of the passenger footwell, behind a trim panel. To remove the panel, pull it toward you and swing it away from the side. To reinstall it, line up the tabs with the grooves and push it shut.
Engine compartment fuse box (power distribution box): under the hood, on the passenger side of the engine compartment, under a protective cover. Squeeze the tabs to lift the cover off.
Verify: confirm both locations in the “Fuses” chapter of the owner’s manual for the specific model year before publishing.
[custom diagram: 2021–2026 F-150 passenger compartment fuse panel]
[custom diagram: 2021–2026 F-150 engine compartment power distribution box]
Most-searched 2021–2026 F-150 fuses (based on the 2023 model)
Passenger compartment fuse panel
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 2 | 10A | Delayed accessory feed |
| 3 | 7.5A | Wireless charger |
| 6 | 10A | Driver power window switch |
| 13 | 7.5A | Instrument cluster, steering column control module |
| 15 | 15A | Integrated control panel, SYNC |
| 21 | 5A | Trailer brake switch |
| 23 | 30A | Driver door control module |
| 24 | 30A | Moonroof |
| 26 | 30A | Passenger door control module |
| 28 | 30A | Amplifier |
| 32 | 20A | Audio control module |
| 34 | 30A | Run/start relay |
| 38 | 30A | Rear power windows |
Engine compartment (power distribution box)
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 4 | 30A | Fuel pump |
| 11 | 30A | Starter motor |
| 13 | 40A | Blower motor |
| 15 | 25A | Horn |
| 32 | 20A | Auxiliary power point |
| 33 | 20A | Auxiliary power point, USB smart charger |
| 34 | 20A | Auxiliary power point |
| 42 | 30A | Trailer brake control module |
| 50 | 40A | Heated rear window (gas, hybrid) |
| 55 | 30A | Trailer tow park lamps |
| 56 | 20A | Trailer tow stop/turn lamps (4-pin) |
| 58 | 10A | Trailer tow backup lamps |
| 64 / 82 | 25A | Four-wheel drive |
| 69 | 30A | Left-hand windshield wiper |
| 91 | 20A | Trailer tow light module |
| 100 | 15A | Left-hand headlamps |
| 101 | 15A | Right-hand headlamps |
| 107 | 30A | Trailer tow battery charge |
The F-150 Lightning (electric) uses a different layout and is not covered by this table.
2023 and 2025 Ford F150 fuse box diagram
The 2023, 2024 and 2025 F-150 keep the same two-box layout as the 2021–2022, but fuse assignments can change from year to year as Ford adds or moves features. Don’t assume a 2021 chart matches a 2025. Pull the chart for your exact model year.
Where to get the 2025 Ford F150 fuse box diagram PDF
Ford publishes each year’s owner’s manual as a free PDF on its owner site. The fuse charts are in the “Fuses” chapter. Newer trucks can also show a digital owner’s manual on the center screen. See the official chart section below for links.
2015–2020 Ford F-150 Fuse Box Diagram (13th Generation)
The aluminum-body 13th-gen F-150 introduced the 2.7L EcoBoost engine and carried the 3.5L EcoBoost, 5.0L V8 and 3.3L/3.5L V6. Like the 14th gen, it has a passenger compartment fuse panel and an under-hood power distribution box.
Where are the fuse boxes on a 2015–2020 F-150?
Passenger compartment fuse panel: on the right-hand side of the passenger footwell, behind a trim panel. Pull the trim panel toward you and swing it away from the side. To put the fuse panel cover back, place the top of the cover on the panel and push the bottom until it latches.
Engine compartment fuse box (power distribution box): under the hood. Its layout changed partway through the generation, so the 2015–2017 and 2018–2020 charts are different.
Verify: confirm the under-hood box position for 2015–2017 versus 2018–2020 trucks in each year’s owner’s manual before publishing.
[custom diagram: 2015–2020 F-150 passenger compartment fuse panel]
[custom diagram: 2015–2017 F-150 engine compartment power distribution box]
[custom diagram: 2018–2020 F-150 engine compartment power distribution box]
Most-searched 2015–2020 F-150 fuses (based on the 2018–2020 models)
Passenger compartment fuse panel
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 4 | 5A | Trailer brake control |
| 13 | 7.5A | Instrument cluster, smart climate control module |
| 14 | 10A | Brake on/off switch |
| 16 | 15A | Tailgate release |
| 24 | 20A | Central lock/unlock |
| 25 | 30A | Driver door control module |
| 26 | 30A | Passenger door control module |
| 27 | 30A | Moonroof / Vista roof |
| 32 | 10A | Multi-function display, SYNC, radio frequency receiver |
| 33 | 20A | Radio |
| 34 | 30A | Run/start relay |
| 38 | 30A (circuit breaker) | Rear window switches and motors |
Engine compartment (power distribution box)
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 1 | 25A | Horn |
| 3 | 30A | Windshield wiper motor |
| 5 | 30A | Starter relay |
| 6 | 20A | Cigar lighter / power point 1 |
| 8 | 20A | Power point 2 |
| 20 | 40A | Blower motor |
| 22 | 20A | Radio amplifier |
| 24 | 30A | Trailer brake control module |
| 29 | 10A | 4×4 solenoid |
| 30 | 25A | Trailer tow battery charge |
| 43 | 20A | Trailer tow lamps module |
| 50 | 30A | Fuel pump |
| 51 | 20A | Power point 3 |
| 53 | 25A | Trailer tow park lamps |
| 58 | 5A | USB smart charger |
| 71 | 25A | 4×4 |
| 74 | 10A | Trailer tow backup lamps |
| 99 | 40A | Heated rear window |
| 103 | 20A | Trailer tow stop/turn relay |
2015–2017 trucks use a different under-hood layout. On 2016–2017 models, the power points are fuses 89–92 in the engine compartment box.
2016, 2017, 2018 and 2019 Ford F150 fuse box diagram
The tables above are for 2018, 2019 and 2020 trucks. If you own a 2016 or 2017, the under-hood box has a different layout (for example, the power points are fuses 89–92), so check the chart in your owner’s manual before pulling anything. The interior panel is in the same place for all six years.
2019 Ford F150 fuse box diagram under hood
On a 2019, open the hood, find the power distribution box, and release the cover tabs. The fuse map is printed on the underside of the cover as well as in the owner’s manual. If the printing has faded, use the manual chart, not a generic chart from another year.
2009–2014 Ford F-150 Fuse Box Diagram (12th Generation)
The 12th-gen F-150 brought the 3.5L EcoBoost (from 2011), the 5.0L V8 and the first SVT Raptor. It has a passenger compartment fuse panel and an under-hood power distribution box, plus an extra relay box on the Raptor.
Where are the fuse boxes on a 2009–2014 F-150?
Passenger compartment fuse panel: under the right-hand side of the instrument panel, which in practice means the side wall of the passenger footwell. The 2014 owner’s manual describes it as behind a trim panel on the right-hand side of the passenger footwell. Pull off the kick panel, then squeeze the sides of the fuse panel cover to remove it. Many trucks keep a white plastic fuse puller clipped to the back of this cover.
Engine compartment fuse box (power distribution box): in the engine compartment, a rectangular black box with the fuse map on the underside of the cover.
Auxiliary relay box (SVT Raptor only): in the left rear corner of the engine compartment.
Verify: confirm the power distribution box position by engine (3.5L EcoBoost, 5.0L, 6.2L, 3.7L, 4.6L, 5.4L) in the owner’s manual before publishing.
[custom diagram: 2009–2014 F-150 passenger compartment fuse panel]
[custom diagram: 2009–2014 F-150 engine compartment power distribution box]
[custom diagram: 2010–2014 SVT Raptor auxiliary relay box]
Most-searched 2009–2014 F-150 fuses (based on the 2013 model)
Passenger compartment fuse panel
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 1 | 30A | Driver front window |
| 2 | 15A | SYNC, display module |
| 3 | 30A | Passenger front window |
| 11 | 10A | Instrument cluster |
| 13 | 15A | Right turn signals / stop lamps |
| 14 | 15A | Left turn signals / stop lamps |
| 16 | 10A | Right low-beam headlamp |
| 17 | 10A | Left low-beam headlamp |
| 19 | 20A | Audio amplifier |
| 20 | 20A | Power door locks |
| 22 | 20A | Horn |
| 24 | 15A | Data link connector (OBD port), steering wheel control module |
| 29 | 20A | Radio |
| 37 | 10A | Trailer brake control |
| 39 | 15A | High-beam headlamps |
| 48 | 30A | Power windows, power sliding back window |
Engine compartment (power distribution box)
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 13 | 30A | Starter relay power |
| 17 | 30A | Trailer brake control |
| 20 | 20A | 4×4 module (electronic shift) |
| 21 | 30A | Trailer tow battery charge relay power |
| 22 | 20A | Cigar lighter / instrument panel power point |
| 27 | 20A | Fuel pump relay power |
| 33 | 40A | 110V AC power point |
| 43 | 15A | Trailer tow backup lamp relay power |
| 49 | 30A | Wiper relay power |
| 51 | 40A | Blower motor relay power |
| 65 | 20A | Auxiliary power point (instrument panel) |
| 66 | 20A | Auxiliary power point (center console) |
| 67 | 20A | Trailer tow park lamps relay power |
| 72 | 20A | Auxiliary power point (rear) |
| 73 | 20A | Trailer tow stop/turn lamps relay power |
On 2009 models the cigar lighter fuse is No. 72 (20A). From 2010 it moved to No. 22 (20A).
2011 Ford F150 fuse box diagram and fuse panel diagram
The 2011 is the first year of the 3.5L EcoBoost and the 5.0L V8, so engine-related entries in the under-hood chart may differ from a 2009–2010 chart. Use the chart from a 2011 owner’s manual for these trucks.
2013 Ford F150 fuse box diagram
The 2013 uses the same panel locations as the rest of the generation. Pull the chart from the 2013 owner’s manual specifically, because Ford updates fuse charts as equipment changes from year to year.
2004–2008 Ford F-150 Fuse Box Diagram (11th Generation)
The 11th-gen F-150 is laid out differently from every other generation: the main fuse and power distribution center is inside the cab, and the under-hood box holds only a few relays (and a small fuse or two).
Where are the fuse boxes on a 2004–2008 F-150?
Passenger compartment fuse panel / power distribution box: under the right-hand side of the instrument panel. In practice it’s on the side wall of the passenger footwell, behind the kick panel. Sit in the passenger seat, pull the kick panel cover off, then remove the fuse box cover. Ford’s own description (“under the right-hand side of the instrument panel”) sends many owners looking under the glovebox, but the panel is lower, on the kick panel.
Auxiliary relay box: in the engine compartment on the left (driver’s) fender. Ford listed versions with and without daytime running lamps (DRL).
Tip: the fuel pump shut-off (inertia) switch on these trucks is also in the passenger footwell behind the kick panel access cover, near the fuse panel. If the truck cranks but won’t start after a bump or jolt, check it.
Verify: confirm both locations, the fuel pump shut-off switch location and the relay box versions in the 2004–2008 owner’s manuals before publishing.
Driving a 2004 F-150 Heritage? The Heritage was a carryover of the 1997–2003 truck, so use the 1997–2003 section, not this one.
[custom diagram: 2004–2008 F-150 passenger compartment fuse panel / power distribution box]
[custom diagram: 2004–2008 F-150 auxiliary relay box (with DRL)]
[custom diagram: 2004–2008 F-150 auxiliary relay box (without DRL)]
Most-searched 2004–2008 F-150 fuses (based on the 2006 model)
Passenger compartment fuse panel / power distribution box (holds both the small fuses and the high-current fuses, 101–118)
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 1 | 10A | Windshield wiper motor, instrument cluster, audio unit |
| 2 | 20A | Turn signal flasher relay, brake pedal position switch |
| 9 | 20A | Fuel pump relay |
| 10 | 20A | Trailer tow park lamp and reversing lamp relays |
| 23 | 10A | Right headlamp |
| 25 | 10A | Left headlamp |
| 26 | 20A | Horn relay |
| 31 | 20A | Audio unit, satellite radio receiver |
| 34 | 15A | Fuel pump relay, PCM, fuel injectors |
| 36 | 10A | Trailer tow connector, right rear park/stop/turn lamp |
| 37 | 20A | Console power points 1 and 2 |
| 39 | 20A | Instrument panel power point |
| 41 | 20A | Data link connector (OBD port), front cigar lighter |
| 42 | 10A | Trailer tow connector, left rear park/stop/turn lamp |
| 101 | 30A | Starter relay |
| 105 | 30A | Trailer electronic brake control module |
| 106 | 30A | Trailer tow battery charge relay |
| 111 | 30A | 4×4 shift motor relays |
| 113 | 30A | Windshield wiper motor |
| 116 | 30A | Front blower motor relay |
Numbering changed during this generation. 2004 uses a different layout, and on late-build 2007–2008 trucks the front cigar lighter moved to fuse No. 110 (20A). Check the chart for your exact year.
2004 Ford F150 fuse box diagram, fuse panel diagram and layout
The 2004 was the first year of this generation, sold alongside the older Heritage model. Confirm which truck you have before using a chart. The redesigned 2004 has the passenger-side kick panel box; the Heritage has the driver-side panel.
2005 Ford F150 fuse box layout
The 2005 uses the same passenger compartment panel and left-fender relay box as the 2004. Pull the 2005 owner’s manual chart to confirm individual assignments.
2006 Ford F150 fuse box diagram, fuse panel diagram and layout
The 2006 keeps the same layout. As with every year, accessory fuses such as the power points can move or be renumbered between model years, so check the 2006 chart rather than reusing a 2004 one.
2007 and 2008 Ford F150 fuse box diagram
The 2007 and 2008 use the same two locations. On late-build 2007–2008 trucks, the front cigar lighter moved to a different fuse (see the note under the table above), so use the chart for your exact year and build.
1997–2003 Ford F-150 Fuse Box Diagram (10th Generation)
The 10th-gen F-150, including the 2004 F-150 Heritage, puts its interior fuse panel on the driver’s side. It’s the only F-150 generation that does.
Where are the fuse boxes on a 1997–2003 F-150?
Instrument panel (passenger compartment) fuse panel: below and to the left of the steering wheel, by the brake pedal. Remove the panel cover to reach the fuses. Ford supplied a fuse puller on the fuse panel cover.
Engine compartment power distribution box: under the hood, on the left (driver’s) side of the engine compartment. It holds the high-current fuses and relays.
1997–1998 extras: primary battery fuses (megafuses) sit under a separate “PRIMARY BATTERY FUSE” cover next to the starter relay, and a minifuse panel sits behind the power distribution box.
Verify: confirm all three locations, especially the 1997–1998 megafuse and minifuse panel layout, against the 1997–2003 owner’s guides before publishing.
[custom diagram: 1997–2003 F-150 instrument panel fuse panel]
[custom diagram: 1997–1998 F-150 power distribution box, megafuses and minifuse panel]
[custom diagram: 1999–2003 F-150 power distribution box]
Most-searched 1997–2003 F-150 fuses (based on the 2003 model)
Passenger compartment fuse panel
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 1 | 15A | Audio |
| 3 | 20A | Cigar lighter, data link connector |
| 11 | 30A | Windshield wiper motor and relays |
| 13 | 20A | Stop lamp switch, turn/hazard flasher |
| 16 | 20A | High-beam headlamps |
| 26 | 10A | Right low-beam headlamp |
| 28 | 10A | Left low-beam headlamp |
Engine compartment (power distribution box)
| Fuse # | Amp rating | Protected circuit |
|---|---|---|
| 1 | 20A | Power point |
| 2 | 30A | Powertrain control module (PCM) |
| 5 | 20A | Trailer tow backup/park lamps |
| 7 | 20A | Horn |
| 10 | 20A | Fuel pump |
| 19 | 10A | Trailer right stop/turn lamp |
| 20 | 10A | Trailer left stop/turn lamp |
| 101 | 30A | Trailer tow battery charge |
| 104 | 30A | 4×4 shift motor and clutch |
| 105 | 40A | Front blower motor |
| 108 | 30A | Trailer tow electric brake |
| Relay 301 | — | Fuel pump relay |
On 1997–1998 trucks the cigarette lighter is fuse No. 3 in the instrument panel box, and the auxiliary power point is fuse No. 10 in the engine compartment box.
2001 Ford F150 fuse diagram
The 2001 uses the driver-side instrument panel fuse panel and the left-side under-hood power distribution box. Use the 1999–2003 under-hood chart, not the 1997–1998 version, which has the separate megafuses and minifuse panel.
2003 Ford F150 fuse box diagram
For a 2003, the fuse box diagram is in the “Roadside emergencies” section of the 2003 owner’s guide. The passenger compartment panel is by the brake pedal, not on the passenger side as on later trucks.
How to Check and Replace a Blown F-150 Fuse
This works on any F-150 from 1997 to 2026. Verify: general how-to guidance; check it against the owner’s manual “Fuses” chapter before publishing.
What you need: the fuse chart for your exact year, a fuse puller (often clipped inside a fuse box cover) or needle-nose pliers, replacement fuses of the same type and amp rating, and a test light or multimeter. A flashlight helps in the footwell.
- Turn everything off. Switch off the ignition and the accessory that stopped working. Before you touch the high-current cartridge (J-case) fuses or relays in the under-hood box, disconnect the negative battery cable, as Ford’s manuals warn.
- Find the right fuse. Look up the circuit in your year’s chart and note the fuse number, amp rating and which box it’s in.
- Open the box. Remove the trim panel or kick panel (interior) or squeeze the cover tabs (under hood).
- Test before you pull, if you can. With the ignition on, touch a test light to both small metal test points on top of a mini fuse. Lit on both sides means the fuse is good. Lit on one side only means it’s blown. A multimeter on continuity mode does the same job with the fuse removed.
- Pull and inspect. Use the fuse puller to remove the fuse straight out. A blown blade fuse has a broken or melted metal strip inside the plastic.
- Replace it with the exact same amp rating. Blade fuses are color-coded by rating, but always go by the number printed on top.
- Test the circuit. Turn the ignition on and check that the accessory works. Then refit the cover and the trim panel.
Never use a higher amp fuse, foil or a wire jumper. The fuse is there to protect the wiring. A bigger fuse lets the wire overheat before anything blows, and Ford warns this can cause wire damage and fire.
Common F-150 Fuse Problems and What They Usually Mean
Verify: general troubleshooting guidance, not taken from a specific Ford source.
- A fuse blows again right away. There’s a short circuit on that circuit: a pinched or chafed wire, a failed component, or a bad accessory plugged in. Replacing the fuse again won’t fix it.
- The power point fuse keeps blowing. Usually a phone charger, inverter or air compressor drawing more than the outlet is rated for, or a coin or debris in the socket.
- Trailer lights out but truck lights work. Check the trailer tow fuses and relays first, then the trailer plug and the trailer’s own wiring, which is the most common short.
- Radio dead and other accessories also out. One fuse may feed several circuits. Look for a shared fuse in your chart before assuming the radio failed.
- Truck cranks but won’t start. Check the fuel pump fuse and relay. On 2004–2008 trucks, also check the fuel pump shut-off (inertia) switch.
- Fuse looks fine but the circuit is dead. The problem may be a relay, a corroded fuse terminal, a bad ground or the module that controls the circuit (such as the body control module).
Electrical faults and engine faults sometimes get confused. If your truck also shows a check-engine light or drivability symptoms, our guides to 3.5 EcoBoost problems and 2.7 EcoBoost problems cover the engine-side issues by year.
Where to Find Your Official F-150 Fuse Chart
The most reliable Ford F150 fuse panel diagram is Ford’s own, because assignments can change by year, engine and equipment.
- Owner’s manual: the “Fuses” chapter has the fuse specification chart for every box. Ford’s fuse specification chart page points owners there.
- Free PDF manuals: download your year’s owner’s manual from Ford’s owner’s manual library by entering your VIN or year and model.
- The fuse box cover: many F-150 covers have a fuse map printed on the underside. Use it to confirm positions, but rely on the manual for amp ratings.
- Full wiring diagrams: the owner’s manual shows which fuse protects what, not how the circuits are wired. For tracing a short or a dead circuit, a Ford F-150 2015–2020 workshop manual includes the wiring diagrams and electrical troubleshooting procedures the owner’s manual leaves out.
Ford F-150 Fuse Box FAQs
Where is the fuse box on a Ford F-150?
On 2004–2026 F-150s, the interior fuse panel is on the right side of the passenger footwell behind a trim or kick panel, and a second box (a power distribution box, or an auxiliary relay box on 2004–2008) is under the hood. On 1997–2003 trucks and the 2004 Heritage, the interior panel is below and to the left of the steering wheel near the brake pedal.
How many fuse boxes does an F-150 have?
Most F-150s have two: one inside the cab and one under the hood. Some have extras. The 2010–2014 SVT Raptor adds an auxiliary relay box, and 1997–1998 trucks have a separate megafuse cover and a minifuse panel near the under-hood power distribution box.
Which fuse is for the radio, cigarette lighter or power outlet on an F-150?
It depends on the year. The radio, cigarette lighter and 12V power point fuses moved between boxes and changed numbers across generations, and even within some generations. Find your year’s section above, then check the “most-searched fuses” table for that generation.
How do I know if an F-150 fuse is blown?
Pull the fuse and look through the plastic: a blown fuse has a broken or melted metal strip. Or, with the ignition on, touch a test light to both test points on top of the fuse. If only one side lights, it’s blown.
Can I use a higher amp fuse?
No. Always use the exact amp rating listed in your owner’s manual. A higher-rated fuse won’t blow when it should, which can let the wiring overheat and start a fire. If the correct fuse keeps blowing, find the short instead.
Is there a fuse box diagram on the fuse box cover?
Many F-150 fuse box covers have a fuse map printed on the underside, but it may not list amp ratings or full circuit names, and it can fade on older trucks. The owner’s manual chart is the complete version.
