General Steps (Always consult your manual for specifics):
1. Disconnect the Battery: This is crucial to prevent electrical shorts and damage.
2. Remove the Steering Wheel: This often needs a special tool to remove the retaining nut. Again, your shop manual is essential here.
3. Remove the Instrument Panel Bezels/Trim: These are usually held in place by screws or clips. Carefully pry them loose, working your way around the perimeter. Take photos as you go to remember how things fit back together.
4. Disconnect Electrical Components: This is where your manual becomes invaluable. Carefully disconnect the wiring harnesses for the antenna, accessories (gauges, lights etc.), and anything else connected to the dash top. Label wires clearly as you disconnect them!
5. Remove the Glove Box: This usually needs to come out to gain access to some of the dash mounting hardware.
6. Locate and Remove Dash Mounting Screws/Bolts: There are likely screws and/or bolts securing the dash top itself. These are often hidden behind trim pieces or under the glove box. Your shop manual will show their locations.
7. Gently Lower the Dash Top: Once all fasteners are removed, the dash top should be able to be carefully lowered or lifted. There might be some resistance; work slowly and avoid using excessive force.
Regarding the Antenna and Accessory Switches:
These switches are typically *part* of the dash assembly. They are NOT independent units that operate separately. They are wired into the dash's wiring harness, and their function is tied to the rest of the electrical system. If they aren't working, the problem could be:
* Loose Wiring Connections: The most likely culprit. Inspect all connections.
* Faulty Switch: The switches themselves might have failed. Testing with a multimeter would be necessary.
* Wiring Harness Damage: There might be a break or short in the wiring harness. This is common in older cars.
* Fuse Issue: Check the car's fuse box for blown fuses related to accessories and the antenna.
* More serious electrical problem: A less common but possible problem lies in the car's main wiring or ignition system.
In short: Replacing or repairing the antenna switch or accessory switch often requires removing the dash top as part of the process. Don't attempt this repair without a detailed shop manual and the appropriate tools. If you're not comfortable doing this yourself, seek out a qualified mechanic specializing in classic car restoration.
