Fuse Box - Interior

This procedure removes and replaces the interior fuse box (junction block) located in the passenger compartment of the 2005 Dodge Viper, including trim removal and electrical connector disconnection.

Warnings

Tools required

Parts

• Interior fuse box assembly (if replacing) × 1 — Use OEM specification
• Trim panel retaining clips (if damaged) — Use OEM specification

Preparation

1. Park vehicle on level surface and ensure ignition is off with keys removed
2. Disconnect negative battery cable and wait 2 minutes for airbag system discharge
3. Locate the interior fuse box on the driver's side lower dash panel, to the left of the steering column
4. Prepare a clean workspace for storing removed trim panels and hardware

Procedure

1. 1

   Remove Lower Dash Trim Panel
   Locate the lower dash trim panel on the driver's side below the steering column. Identify and remove the fasteners securing the panel - check for screws along the top edge and bottom edge of the panel. Carefully pull the panel away from the dash, releasing any remaining retaining clips. Disconnect any electrical connectors for courtesy lights if equipped, then remove the panel completely from the vehicle.
2. 2

   Access Fuse Box Mounting Area
   With the lower trim removed, the interior fuse box should now be visible mounted to the left side of the steering column area. Use a flashlight to inspect the mounting configuration and identify all electrical connectors attached to the back and sides of the fuse box. Note the routing of the wiring harnesses for reinstallation reference.
3. 3

   Remove Fuse Box Cover
   Release the fuse box cover by pressing the release tabs or removing the cover screws if present. Remove the cover and set aside. If replacing the fuse box assembly, photograph or document the position of all fuses and relays for transfer to the new unit.
4. 4

   Disconnect Electrical Connectors
   Beginning with the largest connector, locate the locking tab or slider mechanism on each electrical connector attached to the fuse box. The number and type of connectors on the Viper interior fuse box must be verified against the OEM service manual before removal, as connector configuration varies. Depress or slide each locking mechanism, then carefully pull each connector straight away from the fuse box. Do not twist or bend the connectors during removal. Label connectors if necessary to ensure correct reinstallation.
5. 5

   Remove Fuse Box Mounting Fasteners
   Locate the mounting bolts securing the fuse box to the dash structure. The Viper interior fuse box mounting fastener count, type, and socket size must be verified against the OEM service manual, as interior junction blocks are often retained by snap tabs or a small number of screws. Support the fuse box as you remove the final fastener to prevent it from falling. Support the fuse box as you remove the final fastener to prevent it from falling.
6. 6

   Remove Fuse Box Assembly
   With all fasteners and electrical connections removed, carefully maneuver the fuse box away from its mounting location. Thread the wiring harnesses through any retaining clips or guides as you withdraw the unit. Remove the fuse box completely from the vehicle.
7. 7

   Prepare New Fuse Box (if replacing)
   If installing a new fuse box, transfer all fuses and relays from the old unit to the new unit in their exact original positions. Verify that all fuse ratings match the circuit labels on both the old and new fuse box. Inspect all electrical connector terminals on the new fuse box for damage or contamination before installation.
8. 8

   Install Fuse Box Assembly
   Position the fuse box assembly into its mounting location, carefully threading the wiring harnesses through any clips or guides. Align the fuse box with the mounting holes in the dash structure. Install the mounting fasteners (count and type per OEM service manual) hand-tight initially, ensuring the fuse box is properly seated and aligned, then torque to the OEM-specified value before final assembly.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
9. 9

   Reconnect Electrical Connectors
   Reconnect each electrical connector to the fuse box in the reverse order of removal. Push each connector firmly onto its mating socket until you hear or feel a positive click indicating the locking mechanism has engaged. Verify each connector is fully seated by attempting to gently pull it away from the fuse box - it should not separate if properly locked.
10. 10

    Reinstall Fuse Box Cover and Test
    Reinstall the fuse box cover, ensuring all tabs are properly engaged. Reconnect the negative battery cable. Before reinstalling trim panels, turn the ignition to the RUN position (do not start engine) and verify that all electrical systems are functioning properly. Check for any warning lights on the instrument cluster that indicate electrical faults. Note: Battery Terminal Clamp (torque per OEM specification, typically 5-9 ft-lbs)
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)
11. 11

    Reinstall Lower Dash Trim
    Reconnect any courtesy light electrical connectors to the lower dash trim panel. Position the trim panel into place, engaging all retaining clips by pressing firmly until they snap into position. Install any screws removed during disassembly. Verify the panel is flush and properly seated along all edges.

Reassembly

1. Ensure all electrical connectors are fully seated and locked before energizing the system
2. Verify the fuse box cover is securely installed to prevent rattles
3. Check that all trim panels are properly secured and aligned before returning vehicle to service

Verification

• Turn ignition to RUN position and verify no warning lights indicate electrical system faults
• Test multiple electrical circuits including headlights, turn signals, horn, power windows, and HVAC blower to confirm fuse box operation
• Start the engine and verify all systems function normally under running conditions
• Check for any rattles or loose trim panels during a short test drive
• Verify the instrument cluster displays normally with no communication errors

Related trouble codes on this vehicle

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