An electrical connection assembly (70, FIGS. 4-7) connects a cable conductor (82) of stiff material such as a copper wire, to a deformable electrode (34, FIG. 5) that lies at the surface of a sheet of elastomeric material (74). The connector assembly includes deflectable elastomeric walls that form a cavity (76) that holds an electrically conductive fluid (84) such as an electrolyte that surrounds and engages the stiff conductor (82) and that engages the elastic electrode (34) as it deflects.