Remove and replace the dash-mounted speaker in a 1970 AMC Rebel Machine, accessing it from below the instrument panel.

Warnings

Tools required

Parts

• Dash speaker × 1 — 4x10 inch or 4 inch round depending on factory configuration
• Speaker mounting hardware kit × 1 — Use OEM specification or aftermarket equivalent

Preparation

1. Disconnect negative battery cable
2. Allow vehicle interior to cool if parked in sun
3. Position work light to illuminate underside of instrument panel
4. Have replacement speaker and hardware ready for installation

Procedure

1. 1

   Access speaker area
   Position yourself comfortably under the dash on the driver or passenger side depending on speaker location. The factory speaker is typically centered in the dash. Use flashlight to locate the speaker from below the instrument panel.
2. 2

   Disconnect speaker wire connector
   Locate the speaker wire connector attached to the speaker terminals. The factory setup typically uses push-on connectors. Carefully pull the wire connectors straight off the speaker terminals. Note the polarity if marked, though most 1970 speakers are not polarized.
3. 3

   Remove speaker mounting fasteners
   Remove the screws or nuts securing the speaker to the dash frame. Factory installation typically uses 3-4 sheet metal screws or 1/4 inch nuts. Keep all hardware for reinstallation or replacement.
4. 4

   Remove speaker from dash
   Carefully lower the speaker down and away from its mounting location. Maneuver it out from behind the instrument panel, being careful not to snag wiring or damage surrounding components. The speaker grille on top of the dash typically does not need to be removed.
5. 5

   Prepare new speaker
   Compare the new speaker to the old unit to verify correct size and mounting hole configuration. If installing an aftermarket speaker, ensure it matches the factory 4-ohm impedance to work properly with the original radio. Attach any mounting brackets or adapters if required.
6. 6

   Install new speaker
   Maneuver the new speaker up into position behind the instrument panel. Align the mounting holes with the dash frame. Have speaker wires accessible for connection before fully securing the speaker.
7. 7

   Secure speaker mounting fasteners
   Install the mounting screws or nuts and tighten securely. Do not overtighten as this can crack the speaker frame or strip the dash metal. Ensure the speaker is seated flat against its mounting surface.
8. 8

   Connect speaker wires
   Push the wire connectors firmly onto the speaker terminals. If terminals are corroded, clean them with fine sandpaper before connection. Ensure connections are tight to prevent buzzing or intermittent operation.
9. 9

   Test speaker operation
   Reconnect the negative battery cable. Turn on the radio and verify the speaker produces clear sound across the volume range. Test multiple stations to ensure proper function. Listen for any buzzing, rattling, or distortion that might indicate improper mounting or loose connections.

Reassembly

1. Verify all mounting hardware is tight and speaker is secure
2. Ensure no tools or parts were left under the dash
3. Confirm speaker grille on top of dash is properly seated if it was disturbed

Verification

• Radio produces clear, undistorted sound from the dash speaker
• No rattles or buzzing at various volume levels
• Speaker remains securely mounted when driving over rough roads
• Both left and right channels function if factory stereo equipped

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