The E 113 has been tested and the lamp has been installed at the factory, there no assembly required. The unit is ready to plugged in to a power outlet. After the unit has been plugged in, both the base and the head of the unit will immediately begin to rotate independently of each other. The unit will create dramatic multiple colored beams rotating in 360 degrees. To enhance the beams use this effect with a fog machine. This unit also looks great in pairs. For optimum performance of your E 113, please follow its prescribed Duty Cycle.