
Locate the cabin power panel under the dashboard on the driver side and check the printed layout on the cover before removing any insert. Match the amperage rating exactly, such as 10A or 15A, to prevent damage to wiring and connected components.
The engine compartment unit is positioned near the battery and contains higher capacity protection elements along with relay switches. Use the cover label to identify circuits like cooling fan, ignition, and lighting systems. Larger ratings such as 30A or 40A are typically assigned to these functions.
Each slot corresponds to a specific electrical line, including headlights, wipers, radio, and power accessories. Remove inserts using a plastic puller and inspect the metal strip inside. A visible break indicates failure. Always replace with the same rating and keep spare inserts in the glove compartment for quick fixes.
1994 Mazda Miata Fuse Box Diagram with Locations and Circuit Details

Check the cabin panel under the driver side dashboard first and align each slot number with the printed chart on the cover to identify circuits like radio, interior lights, and turn signals.
The engine compartment unit near the battery contains high load protection elements and relays controlling systems such as cooling fan, ignition, and headlights. These components are arranged in rows with clear amperage markings.
Typical slot assignments include:
- 10A for interior lighting and audio system
- 15A for cigarette lighter and accessory outlet
- 20A for wipers and washer motor
- 30A and above for cooling fan and main power circuits
Relays are larger square modules placed alongside blade inserts and handle switching for key systems. Common relay functions include:

- Headlight control
- Horn activation
- Fuel pump operation
To inspect a faulty circuit, remove the insert using a puller tool and check the metal strip inside. A broken link means the component must be replaced with the same rating.
Keep spare inserts in the vehicle and store them in a dry compartment. This allows quick restoration of systems like lights or wipers without tools or workshop access.
Exact placement of cabin and engine bay fuse panels in 1994 Mazda Miata

Open the driver side door and inspect the area beneath the dashboard near the steering column, where the interior electrical panel is mounted behind a small plastic cover. Pull the cover straight outward to reveal the slot layout and access the inserts.
The under hood power distribution unit is positioned close to the battery on the left side of the engine compartment. Release the side clips to lift the lid and view high current protection elements along with relay modules arranged in a compact grid.
In some configurations, an additional small panel may be located near the driver side kick panel, behind a trim piece adjacent to the door frame. This area often contains circuits related to lighting or auxiliary systems.
Use a flashlight when inspecting these areas, as the cabin mounting position is recessed and partially hidden by lower trim panels. Clear visibility helps avoid removing the wrong insert.
Ensure the ignition is off before accessing any panel, and keep track of each insert position to maintain proper circuit connections during reinstallation.