A modification system for modifying a tightly-braided electrical harness including at least one conductor cable bundle surrounded by a tight braid. The provision of the protective device prevents a transmission of overvoltages from the sensor to the evaluating unit. However, if the representative computer cannot be activated for any reason, each power supply control device powers up its own computer when the entered next power-up date and time comes. A portion of each of the wrapped cables is adapted to be interposed between the housings. The preserved copies of these values may be copied back to the function stack frame thereby enabling execution of the process to continue.