A connector (1) and method of making electrical connection between an electrical conductor (7, 11) and a removable electrical device (2). The connector (7, 11) is an elastic material, such as silicone, that is both compatible with the environment and is an electrical insulator. It forces contact between the electrical device (2) and integral contacts (10, 13) in the connector (1) by virtue of its elasticity. The electrodes (4, 6) and the electrical connections are protected from the environment to avoid electrical leakage or corrosion of the electrodes (4, 6).