Quik-Wire Connectors Most HES and Folger Adam electric strikes will ship with black connectors--and convenient pigtails for 12V or 24V wiring. The black connectors are smaller than the old-style, white connectors. And the 12V and 24V pigtails make electrical configuration much easier. For dual voltage electric strikes, you'll no longer need to cut and splice for voltage conversions. Just choose your 12V or 24V pigtail and snap the pigtail and strike connectors together. For single voltage products, it's just as easy. Pre-stripped wire-ends connect quickly to site power and wiring is complete.