Clay bar it. This will bring out the shine and remove years of swirl marks and clear coat yellowing/fading. Get clay bar system at your local auto store and follow the directions as it is different than conventional waxing.
You use soapy water the lube the clay bar. You move the bar up and down or side to side across the surface. Not in concentric circles like wax.
After the clay bar you must wax the car as it will be completely unprotected.
The new wax should bead like a Jersey housewife's sweater. Damn thats a good line.....