I had to replace one of my actuators after 20+ yrs of service. The replacement comes with a new pigtail. However access to the wiring was tough on my 2502. You can disconnect the existing wires by opening up the top of the actuator. You'll find spade connectors inside. Remove the new pigtail the same way and reuse the old if its in good condition. Just be mindful of the O-rings. some silicon lube works well to protect them in the process.