Weathered wires are extremely brittle. The wires could have broken inside the sheath when you have been installing the doorbell, and would not be capable to have electrical current. By clicking “Take All Cookies”, you agree to the storing of cookies on your machine to improve web page navigation, analyze https://tedomarket.com/product/smart-home/smart-home-monitor/smart-remote-control-home-monitor/kkmoon-visual-intercom-doorbell-7-tft-lcd-wired-video-door-phone-system-indoor-monitor-700tvl-outdoor-ir-camera-support-unlock-2/