Resistors are used to correct the current drop that is caused by LEDS. This current drop will cause your lights to flash at a much faster rate. Our resistors come with 4 wires to give you the opportunity to install them without splicing the wires.
To install you would connect one Black wire to the ground on the bike, the other Black wire to the ground on the light itself. The same applies for the positive, one goes to the bike, the other to the light. You could also clip off one of the wires and splice them in directly if you don't need the 4 wires.
You will need one set of our resistors for every set of LED signals that you order.