2024 International MV Fuse Box Diagram & Amp Ratings

When electrical issues strike your 2024 International MV, tracking down the right fuse is the crucial first step to getting your commercial truck back on the road. Whether you are dealing with a dead blower motor, a failed trailer brake circuit, or unresponsive headlights, finding the correct fuse box and amperage rating saves you valuable downtime. As an ASE-certified master technician, I’ve put together this comprehensive guide to the fuse box locations and circuit diagrams for the 2024 International MV.

Disclaimer: Fuse configurations can vary based on specific upfits, body modules, engine options (such as the Cummins L9 or B6.7), and trim levels. Always verify with the printed legend on the inside of your fuse box lid before replacing any fuses.

Quick answer

The 2024 International MV typically utilizes two primary fuse box locations to distribute power throughout the chassis and cab:

1. Under-Hood Power Distribution Center (PDC): Located in the engine compartment, typically mounted on the firewall/cowl area on the driver's side or near the main battery distribution box. This houses high-amp fuses and critical powertrain circuits.
2. Cab / Dash Fuse Panel: Located inside the cab, typically behind a removable plastic cover on the passenger side lower dash panel (kick panel/glove box area). This controls interior features, body controllers, and cabin accessories.

(Note: There is no trunk/cargo fuse box on the International MV, though secondary body-builder modules may be mounted on the frame rails depending on the upfit).

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Cab / Dash Fuse Panel

The interior fuse box is responsible for the creature comforts, interior lighting, and diagnostic ports inside your International MV cab.

Fuse #	Amp	Color	Circuit / Component Protected
F1	10A	Red	Ignition Switch / Cluster Wake-up
F2	15A	Blue	Radio / Infotainment System
F3	20A	Yellow	Cigar Lighter / 12V Power Outlets
F4	10A	Red	Airbag / SRS Module
F5	30A	Green	HVAC Blower Motor
F6	15A	Blue	Tail / Park / Clearance Lights
F7	10A	Red	Cab Dome Lighting
F8	20A	Yellow	Wiper Motor / Washer Pump
F9	15A	Blue	OBDII Data Link Connector (DLC)
F10	10A	Red	Heated Mirrors

Interior Relays

The interior fuse panel also houses several micro-relays. The most common include:

• R1: Blower Motor Relay
• R2: Accessory Power Relay
• R3: Wiper Motor Relay

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Under-Hood Power Distribution Center (PDC)

The PDC in the engine bay manages the heavy electrical loads, the engine control module (ECM), chassis brakes, and exterior lighting systems.

Fuse #	Amp	Color	Circuit / Component Protected
F11	20A	Yellow	ECM / PCM (Engine Control Module)
F12	15A	Blue	Fuel Pump / Lift Pump
F13	30A	Pink/Green	Starter Solenoid Relay Power
F14	40A	Orange	ABS / Air Brake Control Module
F15	30A	Pink/Green	Trailer Brake / Trailer Tow Package
F16	15A	Blue	Headlights - Low Beam
F17	15A	Blue	Headlights - High Beam
F18	10A	Red	A/C Compressor Clutch
F19	20A	Yellow	Horn
F20	30A	Pink/Green	Allison Transmission Control Module (TCM)
F21	20A	Yellow	Body Builder / PTO Power

Under-Hood Relays

Alongside the fuses, the PDC contains critical system relays:

• R11: Starter Relay
• R12: ECM Power Relay
• R13: Fuel Pump Relay
• R14: A/C Clutch Relay
• R15: Headlight Relay

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How to test a fuse

Replacing parts without diagnosing the root cause is a surefire way to waste time and money. Here is the professional way to test the fuses on your 2024 International MV:

1. Visual Inspection: Pull the suspect fuse using a pair of fuse pullers or needle-nose pliers. Look at the U-shaped wire inside the plastic casing. If it is broken or scorched, the fuse is blown.
2. Use a Test Light: The fastest way to check fuses without removing them is with a 12V test light. Ground the clip of the test light to a good, bare metal chassis ground. Turn the truck's ignition to the "ON" position. Touch the probe to the small exposed metal testing tabs on top of the fuse. If the light illuminates on both tabs, the fuse is good. If it only lights up on one side, the fuse is blown.
3. Use a Multimeter: For maximum accuracy, set a digital multimeter to the continuity setting (the one that beeps). Touch one probe to each side of the removed fuse. A continuous beep means the fuse is intact; silence means the fuse has blown.

Pro Tip: Never replace a blown fuse with one of a higher amperage rating. Doing so removes the circuit's protection and can lead to melted wiring harnesses or even a vehicle fire.

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Common blown fuses on this vehicle

Commercial trucks take a beating, and electrical shorts are part of life on the road. If you drive a 2024 International MV, watch out for these commonly blown fuses:

• Cigar Lighter / 12V Outlets (Fuse F3): Drivers often plug in high-draw accessories like portable heaters, coolers, or multiple heavy-duty chargers. If your dash outlets stop working, check this fuse first. Ensure the accessories being used don't exceed 20 amps.
• Trailer Brake / Towing Lights (Fuse F15 & F6): The trailer harnesses at the back of medium-duty trucks are notorious for collecting water, dirt, and road salt, leading to electrical shorts. If you lose your trailer lights or trailer brake controller functionality, inspect the 7-way plug for corrosion before simply tossing a new fuse in.
• Blower Motor (Fuse F5): If the cabin HVAC stops blowing air, check the 30A green blower motor fuse. Blower motors can draw excessive amperage as they age or if the cabin air filter is heavily restricted.
• Fuel Pump (Fuse F12): If your MV cranks but refuses to start, verify the fuel lift pump fuse and relay.

Keeping a variety pack of spare Mini and ATO/ATC fuses in the glove box is a must for any commercial driver.

If you are dealing with a fuse that blows repeatedly the moment you replace it, you have a dead short to ground somewhere in the vehicle's wiring harness. Tracking down these shorts in a complex medium-duty truck requires specialized diagnostic tools and wiring schematics.

Find a trusted shop on Repairius to get your commercial truck back in business quickly and safely.