
Access the cabin panel behind the glove compartment to inspect modules controlling interior lights, climate control, and power outlets. Each slot is labeled to indicate the connected system, allowing fast identification and replacement.
Check the under-hood module near the firewall for circuits that manage ignition, engine sensors, and cooling fans. Use the printed legend to verify connections, and ensure that replacements match the correct amperage rating.
Use color-coded modules to match amperage with the corresponding circuit: red units handle 10 amps, blue 15 amps, yellow 20 amps, and green 30 amps. This prevents overcurrent issues and protects sensitive electronics.
Visually inspect each module for discoloration, melting, or corrosion. Early detection of compromised components prevents intermittent failures and avoids unnecessary replacements.
Keep a continuity tester and pliers to confirm the circuit path before installing new modules. Testing ensures reliable operation for headlights, dashboard indicators, and engine control systems.
Ford Focus Electrical Panel with Labeled Circuit Locations and Functions
Access the cabin panel behind the glove compartment to inspect modules controlling interior lighting, climate control, and accessory outlets. Each slot is labeled with the corresponding system, making identification and maintenance straightforward.
Check the under-hood module near the firewall for circuits managing ignition, engine sensors, and cooling fans. Use the printed legend to confirm connections and ensure replacements match the correct amperage rating.
Color Coding and Amperage Guidelines

Match each module to its color-coded rating to prevent overcurrent issues. Red handles 10 amps, blue 15 amps, yellow 20 amps, and green 30 amps. Correct matching protects sensitive electronics and maintains reliable operation.
Visually inspect each slot for discoloration, corrosion, or signs of melting. Early detection of compromised modules avoids intermittent failures and reduces unnecessary replacements.
Testing and Installation Tips
Use a continuity tester and pliers to confirm circuit paths before installing new modules. Testing ensures proper operation for headlights, dashboard indicators, and engine control systems, preventing electrical faults.
Organize replacements by function–interior circuits, engine systems, and accessories–to streamline maintenance. Keeping a small set of common amperage modules on hand minimizes downtime during repairs.
Locating Cabin and Engine Compartment Electrical Panels

Open the glove compartment to access the interior panel that manages circuits for dashboard indicators, climate control, and accessory outlets. Each slot is labeled with the connected system, which helps identify the module without trial and error.
Check the engine compartment module near the firewall to locate circuits handling ignition, cooling fans, and engine sensors. Panels are secured with clips, allowing quick removal for inspection or testing without dismantling other components.
Interior Panel Layout

Typical slot assignments include:
- Interior dome and map lighting
- Power windows and door locks
- Audio system and infotainment modules
- Climate control circuits
- Auxiliary power outlets
Use a printed legend to match modules with their assigned circuits and amperage ratings. Correct identification ensures safe replacement and prevents damage to sensitive electronics.
Engine Compartment Panel Layout
Key circuits in the under-hood module include:
- Ignition and starter relays
- Cooling fan motors
- Fuel injection sensors
- Headlight and fog light circuits
- Powertrain control modules
Visually inspect each module for discoloration, corrosion, or melted housing. Maintain a continuity tester to verify each circuit path before installing replacements to ensure reliability of critical systems.