An LED has two leads: the anode (beneficial) plus the cathode (detrimental). It is important to connect the LED the best way all-around inside of a circuit—LEDs are polarized elements, and reversing the polarity will prevent them from working. “It has presently endured Hurricane Debbie and large winds without any https://www.uk-exhibitionstands.co.uk/product/backlit-display-kit-03/