1. Komatsu Construction Equipment 12-Pin Rectangular Connector
2. JumperBox pin hole mapping
| Pin # | Voltage | Signal | FCAR JumperBox hole | FCAR JumperAdaptor |
| 12 | 0 | Ground | Ground | Ground |
| 1 | 24V | Power (9-32vdc) | VCC | Power + |
| 10 | 2.6V | Can Lo | 14 | Can L |
| 3 | 2.4V | Can Hi | 6 | Can H |
3. Using Diesel Engine and select Cummins (auto detect) to scan