
To identify and resolve electrical issues in your vehicle, it’s important to first locate the system that distributes power to key components. The main electrical hub is typically situated within reach of the driver’s seat, often near the dashboard or underneath the driver’s side. Ensuring that you know where this unit is can save valuable time when troubleshooting issues such as faulty lights, HVAC problems, or non-operational electronics.
The layout of the components inside this power distribution system is straightforward, with each section dedicated to a specific function like lights, interior accessories, and engine control systems. Each individual circuit within the unit is protected by a specific relay or protective element, meaning when something malfunctions, you can easily pinpoint the faulty area.
By understanding the role of each part and its location, it becomes easier to maintain, repair, or even upgrade the system. A quick reference guide to the main distribution unit can provide the exact specifications for each protective device, helping you with replacements and repairs when necessary.
2017 Kenworth T680 Fuse Panel Diagram

To access the main electrical control unit, start by locating the compartment under the dashboard, typically near the driver’s seat area. This area is where power is distributed to multiple vehicle systems, such as lights, air conditioning, and the engine’s electrical components. It is important to know the exact position of this unit for efficient troubleshooting and maintenance.
The layout of the electrical system consists of multiple relays and protective components. These components are arranged in dedicated sections based on the vehicle’s functions. For example, one section may be responsible for interior lighting, while another is dedicated to safety systems like airbags or ABS. Each circuit is equipped with a specific protection mechanism to prevent damage to the vehicle’s electrical components.
If an electrical issue arises, refer to the system’s reference guide to identify the exact location of the malfunctioning circuit. You will typically find labels or numbers next to each protective component. This will help you quickly isolate and resolve problems without unnecessary troubleshooting.
When inspecting this system, always ensure the vehicle is turned off to prevent accidental shorts. Disconnect the battery if necessary before working with any component. Also, use the correct tools to remove and replace any damaged relays or circuits to avoid causing further damage to the electrical system.
A detailed reference guide to the layout will provide the specifications for each relay and fuse, which is especially useful for anyone performing repairs or upgrades. Ensure that you keep this guide accessible for future maintenance tasks.
Locating the Fuse Panel in the 2017 Kenworth T680

The primary electrical unit is typically situated beneath the dashboard on the driver’s side. To access it, remove the cover using a screwdriver or by hand, depending on the configuration. Once the cover is removed, the electrical circuits are clearly laid out for easy inspection and maintenance. Check the underside of the driver’s side compartment to find the unit housed within a plastic casing.
Another important location for the secondary electrical system is in the engine bay, typically near the vehicle’s battery. This compartment contains additional protective relays that control high-power functions. Be sure to inspect both locations when troubleshooting or replacing damaged components to ensure no connections are overlooked.