Connection box assembly is provided for connecting evacuation slide actuation cable of evacuation slide actuation system to evacuation slide inflation system. Connection box assembly comprises connection box, connection box lid coupled thereto, electrical connector blocker coupled to connection box lid, and connection box slider disposed within connection box. Connection box lid is configured to slide between an open and closed position. Electrical connector blocker is configured to prevent electrical connection to electrical connector coupled to evacuation slide inflation system when connection box lid is in open position and to permit electrical connection to electrical connector when connection box lid is in closed position. Connection box slider is positioned to receive first cable end of evacuation slide actuation cable when connection box lid is in open position. Connection box lid in closed position closes connection box retaining and sealing connection box slider and first cable end inside connection box assembly.