Blinking LEDs with plastic wire and resistor for Plug and Play used. You may Connect these LEDs to any power source between 3V to 18V(3V dim light,12V bright light). These LEDs will especially look great with 9-12 Volts of power input. Resistor: 1.5kΩ,1/4W Length of the wires: 20cm+20cm LED Thickness: 2mm LED Color: RED Content: 10 led lights TRICKS: - Use a lighter for stripping the wires When required. Do not expose too long to fire, or the Entire led will burn. - Use brass rods or tubes (LINK) to conduct the electricity.