Features & Benefits Genuine Nexiq cable.For Cummins engines with 3 or 2 pin connector.Works with Nexiq USB Link 3 and USB Link 2.This is a 3 pin diagnostic cable used to connect your Nexiq USB Link 3 to Cummins engines with either a J1939 3 pin Deutsch or a 2 pin adapter. Includes alligator clips for connecting to a battery. Also works with USB Link.