Northern Lights 
To dream of the northern lights symbolizes youth, renewed energy, and vitality. You finally see the big picture about a relationship or situation you are facing.
On the other hand, the northern lights may imply that although you know what you need to do, you may be too afraid or too lazy to make the right move.
Air Conditioner
To dream that the air conditioner is not working indicates that you are anxious and tense. A certain aspect or circumstance in your life has you feeling nervous and apprehensive.
To see or feel the air conditioner in your dream symbolizes release of pressure and stress. You are no longer concerned or upset about a problem or disagreement
National Anthem
To dream of your country's national anthem indicates a personal need to revisit an important location or emotional situation from your childhood.
The national anthem playing loudly in your dream may be telling you to be open to others cultural differences.
Perpetual Motion
To dream of perpetual motion suggests you are feeling worried and uneasy about a circumstance. You are dissatisfied with predictability and repetitiveness in your daily life, career, and relationships. You want change.