Check the trunk-mounted power distribution module first if rear lighting, fuel system, or ignition issues appear, as this model places the main high-current panel near the battery in the rear compartment.
This sedan uses multiple electrical distribution points, including a rear-mounted main unit and an additional cabin panel. The rear module handles high-load circuits with ratings from 30A to 80A, supplying power to systems such as fuel pump, starter, and electronic stability control.
Inside the cabin, a secondary panel manages lower-load circuits tied to interior electronics. These include infotainment, climate controls, and dashboard systems, with ratings typically ranging between 5A and 25A. Each slot is labeled numerically, and matching the correct circuit prevents accidental shutdown of unrelated components.
Always verify amperage before replacement, as installing a higher-rated component may lead to overheating or wiring damage. Use a multimeter to confirm continuity, since visual inspection alone may miss micro-fractures in the conductive strip.
Corrosion and loose contacts are common in rear-mounted units due to temperature variation and moisture exposure. Inspect terminal connections carefully, especially in vehicles used for extended idling or patrol duty.
2012 Dodge Charger Fuse Box Diagram with Full Layout of Fuses and Relays
Use the cover label inside the rear power module to match each slot before removal, since this vehicle relies on tightly grouped circuits that can disable multiple systems if handled incorrectly.
The main distribution unit is mounted in the trunk near the battery and contains high-capacity protective elements and relay switches. Ratings typically range from 30A to 80A, supplying current to ignition, fuel delivery, ABS, and cooling systems. Large cartridge-style links are positioned closer to the main power input, while smaller blade types sit along the outer rows.
Relay modules are arranged by system function, making identification faster once layout logic is understood.
Relay grouping and placement
Relay blocks follow a structured pattern:
- Starter and ignition relays placed near primary power feed lines
- Cooling fan relays grouped together for thermal management circuits
- Fuel pump relay located near control module connections
- Lighting relays positioned toward outer edges of the panel
Inside the cabin, a secondary panel handles low-amperage circuits such as infotainment, interior lighting, and control switches. These elements usually range from 5A to 25A and are arranged in numbered rows for quick reference.
Always compare the amperage marking printed on top before installing a replacement, as mismatched ratings can lead to overheated wiring or malfunctioning modules.
Inspection and fault detection
Check each component visually by looking at the internal metal strip; a break indicates failure. For accuracy, test continuity using a multimeter rather than relying only on appearance.
Frequent failures in the trunk-mounted unit may be linked to moisture exposure or vibration. Inspect terminal contacts for oxidation, loose fit, or heat discoloration, especially around high-load circuits.
For repeated electrical issues, trace the circuit using slot numbering and verify relay operation by swapping with a matching unit from a non-critical system.
Exact location of interior and engine compartment fuse panels in 2012 Charger
Open the trunk and lift the floor cover to access the main power distribution unit, positioned next to the battery on the right side; this rear-mounted module contains high-current links and relay blocks for drivetrain, cooling, and stability systems.
Inside the cabin, locate the secondary panel on the driver side end of the dashboard behind a removable side cover; access requires opening the door fully and prying off the trim panel to reach low-amperage circuit links for electronics and controls, while under the hood there is no primary distribution unit since this model centralizes power routing in the rear compartment, so always disconnect the battery before working on any of these locations to prevent short circuits or accidental relay activation.