Relay - Generic

Procedure for locating and replacing a generic relay in the 2005 Dodge Viper's power distribution center or interior fuse panel.

Warnings

Tools required

Parts

• Replacement relay (match amperage and pin configuration to original) × 1 — Verify relay number from fuse box diagram

Preparation

1. Park vehicle on level surface and apply parking brake.
2. Turn ignition to OFF position and remove key.
3. Allow engine compartment to cool if vehicle was recently operated.
4. Locate the power distribution center (PDC) in the engine compartment near the driver's side shock tower and the interior fuse panel on the driver's side lower dash.
5. Consult the relay identification diagram on the underside of the PDC cover or in the owner's manual to identify the specific relay requiring replacement.

Procedure

1. 1

   Disconnect battery negative terminal
   Using a 10mm wrench or socket, loosen the negative battery terminal bolt and remove the cable from the battery post (note: on the 2005 Viper the battery is located in the rear of the vehicle, not the engine compartment). Secure the cable away from the battery to prevent accidental reconnection during the procedure.
2. 2

   Access the power distribution center
   Open the hood and locate the power distribution center on the driver's side of the engine compartment. Press the release tabs on both sides of the cover and lift the cover upward to expose the relays and fuses. The relay diagram is typically printed on the underside of the cover.
3. 3

   Identify the target relay
   Using the relay diagram, identify the specific relay position corresponding to the circuit being serviced (e.g., fuel pump relay, starter relay, cooling fan relay). Note the relay number and amperage rating printed on the relay body. If the target relay is not in the PDC, proceed to check the interior fuse panel located on the driver's side lower dash panel.
4. 4

   Remove the faulty relay
   Grasp the relay firmly with needle-nose pliers or a relay puller tool and pull straight upward with steady force to extract the relay from its socket. Avoid rocking the relay side-to-side, as this can damage the socket terminals. Inspect the relay terminals for corrosion, burning, or physical damage.
5. 5

   Inspect relay socket
   Examine the relay socket terminals for signs of corrosion, melting, or discoloration. If corrosion is present, clean the terminals with electrical contact cleaner and a small wire brush. If terminals are melted or damaged, the socket assembly may require replacement, which involves accessing the backside of the PDC and may require professional assistance.
6. 6

   Install the replacement relay
   Verify the replacement relay matches the original in amperage rating and terminal configuration. Align the relay terminals with the socket and press the relay firmly into the socket until it seats completely. The relay should sit flush with adjacent relays and be fully engaged in the socket.
7. 7

   Reinstall power distribution center cover
   Position the PDC cover over the relay and fuse block, ensuring the relay diagram is visible for future reference. Press down on the cover until the locking tabs engage with an audible click on both sides.
8. 8

   Reconnect battery negative terminal
   Position the negative battery cable onto the negative battery post and hand-tighten the terminal bolt. Snug the battery terminal bolt using a 10mm socket (typically about 5 ft-lbs / 60 in-lbs — verify against factory spec).

Reassembly

1. Ensure the power distribution center cover is fully seated and latched before closing the hood.
2. If the interior fuse panel was accessed, ensure the panel cover is reinstalled and secured.

Verification

• Turn the ignition to the ON position (without starting the engine) and verify the relay clicks when the circuit is activated (you may hear the relay energize).
• Start the engine and confirm the circuit controlled by the relay functions correctly (e.g., fuel pump primes, cooling fans operate, starter engages).
• Check for any warning lights on the instrument cluster that may indicate electrical system faults.
• If using a multimeter, verify continuity through the relay when energized and no continuity when de-energized.

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