It was recommended that you wait to wax when lacquer was used. This type of paint needs to dry over time as the solvent evolves out from the skin that forms. Because of the high amount of solvent used in lacquer, it could take a long time, depending on atmospheric conditions.
Modern paints are high solid and are cured through a chemical reaction. There is much less solvent used. A urethane is formed through the combination of an isocyanate hardener and the clear coat substrate resulting in cure times as quick as 15 minutes depending on the temperature used during force drying. Once cured you can apply a wax or sealer. There is no way a wax coating is going to lock in any solvents.
Good luck with your new truck.