Remove and replace the power antenna assembly on a 1966 Chevrolet Corvette, including disconnecting electrical connections and removing the antenna mast and motor unit.

Warnings

Tools required

Parts

• Power antenna assembly × 1 — Use OEM specification or aftermarket equivalent
• Antenna mast (if separate) × 1 — Use OEM specification
• Antenna mounting gasket/seal × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and set parking brake
2. Disconnect negative battery cable
3. If antenna is power-operated, turn radio on briefly (before battery disconnect) to note antenna position for troubleshooting
4. Gather all tools and replacement parts
5. Clean area around antenna base to prevent debris from falling into fender cavity

Procedure

1. 1

   Remove antenna mast
   Unscrew the antenna mast by rotating it counterclockwise by hand. If the mast is seized or damaged, use needle-nose pliers wrapped with tape to grip and turn it without causing further damage. Remove the mast completely from the antenna base.
2. 2

   Access antenna mounting hardware from wheel well
   The 1966 Corvette antenna is mounted at the rear of the vehicle on the rear deck/quarter panel, not the front fender. Access the antenna base and mounting hardware from the rear of the car, typically through the rear storage compartment or from behind the interior trim panels. From inside the wheel well, locate the antenna cable and mounting hardware. You may need to remove or pull back the inner fender splash shield if equipped. The antenna assembly is mounted at the rear of the vehicle; access it from behind the rear interior trim or rear compartment.
3. 3

   Disconnect antenna lead and power connector
   Locate the antenna coaxial cable connection to the radio lead (typically behind the dash or accessible from the fender well). Disconnect the coaxial cable by unscrewing the connector. For power antennas, disconnect the electrical connector from the antenna motor by pressing the release tab and pulling the connector free. Note wire routing for reinstallation.
4. 4

   Remove antenna bezel and trim
   From the exterior of the fender, remove the decorative chrome bezel around the antenna base. This typically unscrews counterclockwise or may be held by a set screw accessible from underneath. Remove any rubber gasket or seal beneath the bezel.
5. 5

   Remove antenna mounting hardware
   From the rear access area, remove the antenna base mounting nut and bracket hardware securing the antenna assembly to the body. Support the antenna assembly while removing the final fastener to prevent it from falling. Verify exact fastener type and size against the 1966 Corvette factory assembly manual before proceeding.
6. 6

   Extract antenna assembly
   Carefully pull the antenna motor assembly and cable through the fender opening from the wheel well side. Guide the antenna base through the mounting hole in the fender, being careful not to scratch the paint or damage the fiberglass. If the assembly binds, check that all mounting hardware has been removed and that cables are free.
7. 7

   Inspect mounting area
   Inspect the antenna mounting hole in the fender for rust, damage, or stress cracks in the fiberglass. Clean the mounting surface thoroughly. Check the condition of the rubber seal/gasket; replace if cracked, hardened, or compressed. Inspect the cable routing path for any sharp edges that could damage the new antenna cable.
8. 8

   Install new antenna assembly
   Feed the new antenna cable and motor assembly through the fender from inside the wheel well. Position the antenna base through the mounting hole, ensuring the rubber gasket is properly seated between the antenna base and fender surface. Align the mounting bracket holes with the fender.
9. 9

   Secure antenna mounting bolts
   Install the antenna base mounting hardware from the rear access area. Hand-tighten first to ensure proper alignment, then snug the fastener(s) firmly to evenly seat the antenna base, taking care not to overtighten against the fiberglass body. Verify exact fastener arrangement against the factory assembly manual. Snug bolts firmly but do not overtighten, as excessive torque can crack the fiberglass fender.
10. 10

    Install bezel and reconnect electrical
    Install the chrome bezel and any trim pieces over the antenna base from the exterior, ensuring the rubber gasket is compressed evenly. Reconnect the antenna coaxial cable to the radio lead, screwing the connector on securely. For power antennas, reconnect the electrical connector to the motor assembly, ensuring it clicks into place.
11. 11

    Install antenna mast
    Thread the antenna mast into the antenna base by rotating it clockwise by hand. Tighten until snug but do not force. If equipped with a power antenna (verify, as most 1966 Corvettes used a fixed manual mast), the mast should thread into the drive mechanism; turn on the radio to verify the mast extends and retracts properly before final assembly. For a manual antenna, simply thread the mast into the base by hand until snug.

Reassembly

1. Reinstall any inner fender splash shields or trim panels removed for access
2. Reconnect negative battery cable
3. Turn radio on to verify power antenna operation (extends and retracts smoothly)
4. Check that antenna mast is fully extended when radio is on and fully retracted when radio is off

Verification

• Turn radio on and verify antenna extends fully without binding or unusual noise
• Turn radio off and verify antenna retracts completely
• Check radio reception quality across AM and FM bands
• Inspect antenna base for proper sealing with no water leaks into fender cavity
• Verify chrome bezel is secure and properly aligned
• Confirm no rattles or loose components when driving

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