Abstract: A fixture for use in establishing electrical contact between a banana plug mounted on a cable and a snap fastener on a disposable skin electrode comprises a bottom flange provided with a sleeve adapted to receive the banana plug. A resiliently expandable through hole formed at the bottom of the fixture makes it possible to snap the fixture over the snap fastener of the skin electrode, with the through hole being of length so that the snap fastener will protrude into the passage and establish electrical contact with a banana plug inserted therein.