electrical
Turn Signal Switch
for 1970 AMC Rebel Machine 390ci V8 · RWD
Editorial review:Chris Hackleman — Master Technician · 20+ years
Difficulty
Moderate
Time
2.0 h
Tools
8
Steps
14
✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman — 20+ years each). Always follow the vehicle's factory service information and torque specs.
Remove and replace the turn signal switch located in the steering column, requiring removal of the steering wheel and column components.
Warnings
⚠️Disconnect battery negative cable before beginning work to prevent accidental horn activation or short circuits
⚠Do not hammer on steering shaft or column as this can damage collapsible steering column safety mechanism
⚠Mark steering wheel position before removal to maintain proper alignment during reinstallation
Tools required
Steering wheel pullerEssential
Socket set (standard)Essential
Screwdriver set (flat and Phillips)Essential
Needle-nose pliersEssential
Snap ring pliersEssential
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Parts
- Turn signal switch assembly × 1 — Use OEM specification
- Steering wheel nut (if damaged) × 1 — Use OEM specification
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Preparation
- Disconnect negative battery cable and isolate from battery post
- Position front wheels in straight-ahead position
- Set parking brake and place transmission in Park or first gear
- Allow engine to cool completely if recently driven
Procedure
- 1Remove steering wheel horn componentsRemove the horn button or center cap by prying gently or removing retaining screws depending on style. Disconnect horn wire from terminal. Use masking tape to mark the steering wheel position relative to the steering shaft for proper alignment during reassembly.
- 2Remove steering wheelRemove the steering wheel retaining nut. Install steering wheel puller and tighten evenly to remove steering wheel from shaft. Do not strike the steering shaft or use excessive force. Remove steering wheel and set aside in safe location.
- 3Remove turn signal canceling cam and springRemove the turn signal canceling cam from the top of the steering shaft. Remove the upper bearing spring and thrust washer if equipped. Keep these components in order for reassembly.
- 4Remove lockplate cover and lockplateRemove the three screws securing the lockplate cover. Using snap ring pliers, compress the lockplate enough to remove the snap ring from the steering shaft groove. Remove the lockplate and set aside the snap ring in a safe location.
- 5Remove turn signal lever and hazard switch knobUnscrew and remove the turn signal lever by rotating counterclockwise. If equipped with hazard warning switch, remove the hazard warning knob by pulling straight out or depressing retaining tab.
- 6Label and disconnect turn signal switch wiringBefore disconnecting, use masking tape to label each wire connection for reference during installation. Disconnect the turn signal switch wiring connector at the base of the steering column. If connector is not accessible, you may need to remove lower column cover.
- 7Remove turn signal switch mounting screwsRemove the three screws securing the turn signal switch to the steering column housing. Note the location and length of each screw as they may differ.
- 8Remove turn signal switch assemblyCarefully pull the turn signal switch up and out of the steering column while guiding the wiring harness through the column. Take care not to snag wires on any internal components. If wires are routed through column, you may need to carefully feed them through.
- 9Install new turn signal switchFeed the new turn signal switch wiring harness down through the steering column housing in the same routing as original. Position the switch onto the steering column housing, aligning mounting screw holes. Install and tighten the three mounting screws securely.
- 10Connect turn signal switch wiringConnect the turn signal switch wiring connector at the base of the column, matching wire colors to your reference labels. Ensure all connections are secure and properly seated.
- 11Reinstall turn signal lever and hazard knobThread the turn signal lever into the switch housing and tighten clockwise until snug. Install hazard warning knob by pushing firmly onto switch actuator or aligning retaining tab.
- 12Reinstall lockplate and coverPosition lockplate onto steering shaft. Compress lockplate using snap ring pliers and install snap ring into shaft groove, ensuring it is fully seated. Install lockplate cover and secure with three screws.
- 13Reinstall canceling cam components and steering wheelInstall thrust washer, upper bearing spring, and turn signal canceling cam onto shaft. Align steering wheel with marks made during disassembly and install onto shaft. Install steering wheel retaining nut and tighten securely (typically 20-25 ft-lbs for this application).
- 14Reinstall horn componentsConnect horn wire to terminal and install horn button or center cap. Ensure proper engagement of retaining mechanism.
Reassembly
- Reconnect negative battery cable
- Verify steering wheel is properly centered with wheels straight ahead
- Check that all column covers and trim pieces are securely installed
Verification
- Turn ignition to ACC or ON position without starting engine
- Test turn signals in both left and right positions - verify front and rear lamps flash
- Verify turn signal canceling mechanism works by rotating steering wheel through a turn
- Test hazard warning switch - all four turn signal lamps should flash simultaneously
- Test high beam switch and dimmer functions if integrated into switch assembly
- Verify horn operation by pressing horn button
- Check that steering wheel returns to center properly and turn signal cancels automatically