Genuine Deutsch DT Series Connector Kit. The Deutsch DT Series of environmentally-sealed connectors is specifically design for cable-to-cable applications and provide one of the most reliable connections. They are suitable for automotive, commercial or marine applications where reliable connections need to be made quickly, easily, and at a low cost. Inserting and removing contacts requires no special tools and - once they are in - the contacts are locked in place by dialectric fingers which are formed as part of the housing. The wedgelocks are then inserted to secure the contacts in place.