Disclosed is a weatherproof bulkhead mount that includes a weatherproof bulkhead housing having a portion sized to pass through a surface of a waterproof, sealed enclosure to an inside space of the enclosure and a portion sized to remain on the surface. The mount has a connector in the housing that provides electrical connection for an active component and is accessible from the outdoor environment, a circuit board in electrical connection with the connector for providing electrical communication between the connector and the inside space, and a removable cap to provide access to the connector when removed and to provide a weatherproof seal for the connector when not removed. Preferably, the “active” component socket is a SIM socket. Preferably, the cap has a push/pull grip, an elastic tether and a tether retaining ring. The tether retaining ring can also function as a weatherproof bulkhead gasket against the weatherproof bulkhead.