SAE J1939 or SAE J1708 (Deutsch Connector) cable to open end. All 9 pins are wired:
Function, Wire Color, Pin
Battery (-) GND Blue 1/A
Battery (+) Orange 2/B
CAN_H Black 3/C
CAN_L White 4/D
CAN_SHLD Red 5/E
J1708 (+) Data (A) Green 6/F
J1708 (-) Data (B) Brown 7/G
Proprietary, Purple 8/H
Proprietary, Yellow 9/J
18 AWG, Shielded cable