OBD2 Extension & Split. OBD2 Y-Splitter Cables. 1 x OBDIISVS 12 Pin to 16 Pin OBD2 Diagnostic Adapter Cable for Mitsubishi OBD1 Scan. Function: Converts OBD1 to OBD2 for diagnostics. Specially designed to connect Mitsubishi vehicles equipped with a 12-pin diagnostic port to standard 16-pin OBD2 tools.