
Access the under-dash control module on the driver side to inspect circuits managing headlights, climate control, and interior electronics. Always disconnect the battery before touching any terminals to prevent short circuits and accidental activation.
Each slot is labeled with its amperage rating to indicate load capacity. Typical values include 7.5A for dashboard indicators, 10A for interior lighting, 15A for audio and communication modules, and 20A for power outlets. Matching the rating ensures proper circuit protection.
Test each circuit with a digital multimeter before replacing any component. Check for continuity and inspect terminals for corrosion or loose connections, which can cause intermittent failures or voltage drops.
Keep a reference chart of circuit functions to simplify maintenance and future repairs. Label each slot according to its system–engine relay, cabin lighting, or auxiliary power–to reduce troubleshooting time and prevent misplacement of replacement components.
2008 Compact Van Electrical Panel Guide

Access the under-dash control module on the driver side to locate circuits managing headlights, cooling fans, and interior electronics. Always disconnect the battery before inspecting or replacing any component to prevent shorts or accidental activation of high-current systems.
Slots are clearly labeled with amperage ratings for rapid identification. Standard values include 7.5A for instrument panel lights, 10A for cabin illumination, 15A for audio and communication modules, 20A for power outlets, and 30A for major systems such as engine relays or main accessories.
Use a multimeter to verify continuity before replacing any terminal. Check for loose connections, corrosion, or discoloration that can cause intermittent failures or voltage drops. Record the tested circuits to maintain a reference for future repairs.
Organize auxiliary components in a small kit inside the vehicle to allow rapid replacement of low-amperage circuits, such as interior lights, USB ports, and door locks, minimizing downtime during on-road maintenance.
Inspect high-current terminals periodically to ensure firm seating and consistent contact. Slots controlling engine management or major accessories require proper torque on terminals to prevent overheating or electrical faults.
Maintain a panel reference chart labeling each slot by its function, including engine relay, interior lighting, or auxiliary systems. This practice streamlines troubleshooting, ensures correct component replacement, and reduces the risk of misidentifying circuits during maintenance.
Locating Main and Auxiliary Circuits

Access the driver-side under-dash control module to locate primary circuits controlling ignition relays, headlights, and cooling systems. Disconnect the battery before handling any terminals to prevent shorts or accidental activation of high-current systems.
Auxiliary circuits are arranged in secondary rows and manage systems such as interior lighting, power outlets, and audio modules. Each slot is labeled with an amperage value to indicate the maximum load it can safely handle.
- 7.5A – Instrument cluster and warning indicators
- 10A – Cabin lighting and glove box lamps
- 15A – Audio modules and communication systems
- 20A – Auxiliary sockets and cigarette lighter
- 30A – Engine relay and main accessories
Use a digital multimeter to verify continuity before replacing any component. Check for loose or corroded terminals, which can cause intermittent failures and voltage drops across both primary and auxiliary circuits.
Keep a reference chart of all circuit functions to simplify maintenance. Label each slot according to its system–engine relay, cabin lighting, or auxiliary module–to reduce troubleshooting time and ensure correct component replacement during repairs.