An LED has two leads: the anode (favourable) as well as the cathode (unfavorable). It is vital to connect the LED the best way all-around inside a circuit—LEDs are polarized elements, and reversing the polarity will prevent them from Doing work. This course of action, known as plasma exchange therapy, https://www.uk-exhibitionstands.co.uk/product/casonara-blimp-cube-360o-hanging-light-box-display-240l/