Apparatuses and methods for joining composite members and other structural members in aircraft wings and other structures are disclosed herein. The resistance body has a first end portion, a second end portion and a central portion between the first end portion and the second end portion. The energy-transforming circuit includes a coupling inductor and a charge-storage capacitor. The snap fit connections eliminate the need for any fasteners, and together with the Z-axis assembly, the assembly process is simplified and accelerated and the possibility of assembly error is reduced or eliminated.