
Locate the power distribution panel under the dashboard on the driver’s side for immediate access. Each relay and circuit protector is labeled, allowing quick identification of components controlling headlights, infotainment, and climate systems.
Refer to the owner’s manual for amperage ratings to avoid accidental overload. Circuits are grouped by function, so the section for auxiliary power outlets is separate from the engine management controls.
Check the rear cargo area panel for additional circuit protections linked to rear lighting, sensors, and trailer connectors. Pulling the removable cover exposes a compact layout that shows the exact location of each module.
Use a multimeter to verify continuity before replacing any connector or protective device. Identifying faulty paths prevents unnecessary replacements and ensures systems such as the horn, windshield wipers, and interior lighting remain operational.
Labeling every component after inspection improves future maintenance. Small stickers or a diagram drawn on paper can serve as a reference when adding aftermarket accessories or diagnosing intermittent electrical issues.
2015 Chevy Trax Fuse Box Diagram

Locate the main power panel under the driver’s side dashboard near the kick panel for quick access. Removing the cover reveals a layout with labels for each circuit, including lighting, ignition, and auxiliary systems.
Each slot carries an amperage rating printed on the panel. Check numbers carefully before replacement; for instance, the cigarette lighter circuit uses a 15-amp connector, while the ABS module requires 30 amps.
Inside the engine compartment, a secondary relay hub manages high-current accessories. It contains relays for the radiator fan, fuel pump, and air conditioning compressor. Use a small flashlight to identify the micro-relays positioned along the top row.
Understanding Terminal Assignments

- Headlamp circuits: positions 4 and 5
- Horn: slot 7
- Power seats: slot 12
- Infotainment system: slot 20
- Traction control: slot 22
Each panel has a printed legend on the inside cover. If the label has worn off, reference the owner’s manual or a PDF service guide. Using the correct replacement prevents voltage drops and intermittent failures.
Tips for Safe Handling

- Disconnect the battery before pulling any connectors.
- Use a fuse puller or needle-nose pliers to avoid bending terminals.
- Replace only with connectors of the exact amperage.
- Keep spare fuses in a waterproof container inside the vehicle.
For diagnostics, a multimeter can test continuity across the terminals. Insert probes carefully, checking both supply and load sides. Faulty circuits will show no reading or a significantly lower voltage, signaling replacement is necessary.
Regularly inspect the relay hub for corrosion or burnt contacts. Cleaning with electrical contact spray extends service life. Secure all connectors firmly to prevent vibration-related disconnections, especially in rough driving conditions.
Locating the Electrical Control Center

Access the cabin section on the driver’s side beneath the steering wheel; remove the small trim panel to reveal the panel of protective switches. It sits slightly above the footwell carpet, held by two plastic clips that can be released with a flathead tool.
Under the hood, the secondary protective assembly is positioned near the battery on the passenger side. Lift the cover to see rows of labeled circuit protectors. Labels are printed directly on the inside of the lid for immediate identification.
For quicker inspection, the internal assembly in the dash has a small chart indicating amperage and corresponding components. The chart is attached to the inside of the protective lid and lists accessories like lighting, audio modules, and power outlets.
Locate the secondary assembly using the main wiring harness as a reference. It runs from the battery along the fender and terminates at a black rectangular casing. Check the cover for release tabs before attempting to lift it to avoid breaking clips.
If searching for a specific module, note that the interior assembly usually contains low-current circuits, whereas the under-hood section handles high-load circuits like the ignition system and cooling fans. This distinction prevents confusion when troubleshooting electrical issues.
For ease of access, keep a flashlight handy and wear gloves to avoid touching terminals directly. Panels may be snug, requiring slight pressure to unclip. Avoid using excessive force that could damage the plastic housing.
After accessing either protective assembly, verify the orientation of each removable fuse or relay. Refer to the printed map inside the cover for exact positions, amperage ratings, and recommended replacements, ensuring each circuit is restored correctly.