Combination Switch

This procedure covers removal and replacement of the combination switch (turn signal/wiper/hazard multi-function switch) on the steering column of a 1994-2007 Dodge Ram 2500 with 5.9L Cummins diesel engine.

Warnings

Tools required

Parts

• Combination switch assembly × 1 — Use OEM specification
• Electrical connector grease (dielectric) × 1 — Use Mopar or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn steering wheel to center position and note alignment
3. Disconnect negative battery terminal and wait minimum 2 minutes
4. Ensure ignition key is removed
5. Tilt steering column to lowest position for better access

Procedure

1. 1

   Disconnect battery ground
   Disconnect the negative battery terminal using appropriate socket. If the vehicle is equipped with a driver airbag, wait a minimum of 2 minutes to allow airbag system capacitors to fully discharge before proceeding with any work near the steering column.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
2. 2

   Remove lower steering column covers
   Remove the lower steering column cover by locating the retaining screws on the underside. Typically there are 2-3 Phillips or Torx screws securing the lower cover. Carefully pull the lower cover away from the column. Then remove the upper cover by releasing the clips or screws securing it to the column.
3. 3

   Access combination switch mounting
   With covers removed, locate the combination switch assembly on the left side of the steering column. The switch is a multi-function unit containing turn signal, wiper, and hazard controls. Identify the electrical connectors on the back of the switch assembly.
4. 4

   Disconnect electrical connectors
   Locate the two main electrical connectors at the back of the combination switch. Depress the connector locking tabs and carefully pull connectors straight off. Note the orientation and routing of the wiring harness for reinstallation. If connectors are tight, use a small flathead screwdriver to gently release the locking tabs.
5. 5

   Remove combination switch mounting screws
   Locate the screws securing the combination switch to the steering column housing (verify exact size/type and count against the service manual for your model year). Remove the screws completely and retain them for reinstallation.
   Torque spec

   Connector Screws4 Nm (3 lb-ft)
6. 6

   Remove combination switch assembly
   With mounting screws removed, carefully slide the combination switch assembly away from the steering column. The switch should pull straight out once the screws are removed. Inspect the mounting area for any debris or damage before installing the new switch.
7. 7

   Install new combination switch
   Position the new combination switch assembly onto the steering column mounting bracket, ensuring proper alignment with the screw holes. The switch should slide into position with the actuator arms aligned with the column. Install and snug the mounting screws to the manufacturer-specified torque (verify spec in service manual; these are low-torque fasteners). Apply a small amount of dielectric grease to electrical connectors before reconnecting.
   Torque spec

   Connector Screws4 Nm (3 lb-ft)
8. 8

   Reconnect electrical connectors
   Reconnect the two main electrical connectors to the combination switch, ensuring they are fully seated and the locking tabs click into place. Verify that connector seals are properly positioned and not damaged. Route wiring harness in original path to avoid pinching.
9. 9

   Reinstall steering column covers
   Position the upper steering column cover back onto the column and secure with clips or screws. Install the lower cover and secure with retaining screws. Ensure all clips are fully engaged and covers fit flush without gaps.
10. 10

    Reconnect battery and test
    Reconnect the negative battery terminal and torque to specification. Turn ignition to ON position (do not start engine). Test all combination switch functions: turn signals left and right, hazard lights, wiper speeds, washer function, and high beam operation. Verify all functions operate correctly before returning vehicle to service.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Ensure all electrical connectors are fully seated with locking tabs engaged
2. Verify steering column covers are properly aligned and secured
3. Check that no wiring is pinched between covers or near moving steering components
4. Confirm steering wheel position remains centered as marked during preparation

Verification

• Turn ignition to ON position and verify no warning lights related to turn signals or wipers
• Test left and right turn signals - verify proper flashing rate and indicator lights
• Test hazard lights - verify all four corners flash simultaneously
• Test all wiper speeds (intermittent, low, high) and washer function
• Test high beam operation and flash-to-pass function
• Verify turn signal self-cancelling function works when turning steering wheel
• Check that all switches return to proper positions and have correct tactile feel

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