The AES OBD-II LineSpi provides breakout box capabilities for the DLC connector whether using a scan tool or not. The AES OBD-II LineSpi can be used to quickly determine the integrity of signal and chassis ground as well as the power source; access and jumper DLC pins without even in hard-to-reach areas; and access all DLC lines with a lab scope or multimeter. Connect the AES OBD-II LineSpi and get instant information (with scan tool connected). The tools has red and green indicators for power and ground integrity and yellow indicators for protocol identification.