[Ovmsdev] New cables just arrived, with strange pinout

I just got a shipment of these custom cables. Any prizes for guessing the purpose? Mark. DB9-F to Left-Hand right-angle J1962-M cable with pinout B, as below Pinout B J1962-M DB9-F Signal 4 3 Chassis/Power GND 6 5 CAN-H (alternate CAN) 14 4 CAN-L (alternate CAN) 13 7 CAN-H (primary CAN) 12 2 CAN-L (primary CAN) 16 9 +12V Vehicle Power J1962 end should be MALE plug with right angle cable. DB9 end should be FEMALE. Both ends should be enclosed in shells, and cable should be 1metre in length.