At Firewire LEDs company believe in quality products backed by even better service. To ensure every customer has the answers they need, when they need them, company have developed a list of frequently asked questions to help. It is important to note that LED lighting is polarity sensitive. This means that if installed with the polarity backwards your lighting will not work. In this case all you need to do is reverse the positive and negative wires on your Firewire LED lighting. It is not uncommon to have wiring of different colors connected while still having the correct polarity for your LED lighting to work.