A sensor system may include a wiring harness including at least one wire, a grommet, a nugget, a sensor, and a harness sleeve. The grommet may include at least one passageway configured to receive the wire. The nugget may include at least one terminal molded into the nugget and coupled to the wire. A mineral insulated cable may be coupled to the sensor and to the terminal. The harness sleeve may define at least one cavity configured to receive the nugget and at least a portion of the grommet. The harness sleeve may be coupled to the mineral insulated cable and may include a first crimp coupling the harness sleeve to the grommet. The exterior surface of the nugget may also include at least one radially disposed groove. The harness sleeve may also include a second crimp coupling the harness sleeve to the nugget, for example, about the radial groove. The first crimp may be configured to compress the grommet to provide a seal between the harness sleeve and the grommet and a seal between the grommet and the at least one wire of the harness wire. The second crimp and the molding of the terminal within the nugget may be configured to provide strain relief for the wiring harness.