Hello I just purchased a 1984 300zx 50th anniversary edition and there are few things I would like to get fixed on it.

1. Possible problems with A/C or defrost? When the car is running it makes this clicking noise right near the defrost vent in the dashboard. If I turn the A/C off or on, it still makes that noise. However, if I hit the defrost button and turn that on it stops the clicking sound. Any ideas on this one?

2. I need to replace the climate control bulb, it’s burnt out. The climate control still works but the bulb is burnt out. Is that fairly easy to replace?

3. The compass works intermittently

4. Clock works intermittently

Thanks for any help and advice.