Abstract: An interchangeable electronics, modular, electric stringed instrument, having a cavity formed through the instrument body beneath the strings to house the pickups and other electronic components. The rear insertion modules provide rapid exchange and simultaneous regrouping of pickups and electronic components. Placement of a module into the instrument automatically positions the pickups beneath the strings, with the module being retained in the body by a flange formed in the instrument body. The module is removably secured in the instrument body by resiliently biased latches, which also function as spacers between the module and instrument body, and connect the electronic components installed in the module to a grounding plate in the instrument body. The interchangeable modules require no external fasteners and can be readily exchanged.