This update to the SPARK MAX CAN Cable bridges the H and L CAN signals together within the cable itself. This prevents the CAN Bus breaking in the event of a cable disconnecting from a SPARK MAX Motor Controller.
These SPARK MAX CAN cables have a JST-PH 4-pin connector on one end, and one male and one female 0.1in 3-pin PWM. They are designed to daisy chain with other SPARK MAX cables to complete a CAN network in an FRC robot system. The CAN High is on the yellow wire and CAN Low is on the green wire.
For more information on the SPARK MAX control interfaces, please see the SPARK MAX User's Manual.