Locate the main power distribution unit inside the cab near the driver-side dash and verify each slot label before replacing any blade component to prevent incorrect installation.
This heavy-duty vehicle uses multiple electrical distribution centers: one in the cabin for control systems and another in the engine compartment for high-current loads. Inside the cab, typical ratings include 5A to 15A for control modules and lighting, while under-hood sections handle 30A to 80A circuits for systems like cooling fans, starter relays, and auxiliary equipment.
Use the printed layout on the cover or service manual to match each numbered position with its assigned circuit, allowing quick identification of faults such as inactive dashboard systems, non-working accessories, or engine-related electrical issues.
Test continuity with a multimeter instead of relying only on visual inspection, since internal breaks may not be visible. Keeping spare blade and cartridge components in common ratings ensures fast replacement during roadside diagnostics.
2020 International Truck Fuse Panel Diagram with Layout and Circuit Details
Match each numbered slot with its labeled circuit before removing any protective link to avoid disrupting multiple connected systems sharing the same distribution path.
The cab and engine compartment distribution centers use a structured grid with clearly marked positions and amperage ratings. Low-current circuits such as lighting and control modules typically use 5A to 15A blade components, while higher loads like HVAC blowers, starter relays, and auxiliary systems rely on 30A to 80A cartridge-style elements. Following the printed layout allows accurate identification of circuits tied to dashboard electronics, braking systems, and power accessories, reducing the risk of incorrect replacement and wiring damage.
Exact Locations of Cab and Engine Compartment Fuse Panels in 2020 International Truck
Check the driver-side lower dash inside the cab, where the primary electrical distribution unit is mounted behind a removable trim section near the steering column.
The interior unit is positioned within reach of the driver seat, typically behind a snap-on cover integrated into the dashboard structure. Pulling the cover outward reveals rows of blade-style links arranged in labeled slots. This section handles control systems, lighting circuits, and in-cab accessories.
Move outside and open the hood to access the engine compartment distribution center located close to the battery and main wiring harness junction.
The under-hood unit is enclosed in a sealed plastic housing with locking tabs on each side. Releasing these tabs provides access to larger cartridge-style links and relays responsible for high-current systems such as starter operation, cooling fans, and auxiliary power outputs.
Inspect both locations before troubleshooting electrical faults, since failures may originate from either low-current cab circuits or high-load engine systems.
Secure all covers tightly after inspection to protect internal connections from dust, moisture, and vibration during vehicle operation.