Devices, systems, and methods for intrusion-detection for use with a fence comprising a gate-section have been developed and are herein described. The present disclosure relates to and describes a gate-connector system for an intrusion-detecting-fence system. A intrusion-detecting cable is run from a fence to a gate section. On each side of the gate section, the cable is terminated into a junction-box and connected to a shorter cable-plug assembly that terminates in a weatherproof, pull-apart connector. The cable-plug assemblies from each side of the gate section are connected together to complete a circuit. With the intrusion-detecting cable extending onto the gate, intrusion-protection is provided on the gate section as well as on the fence. A gate at the gate section can easily be opened by unplugging the connectors.