One end connector 90 degree takeoff, GK-9-23 1/2" AC-AN other end, straight takeoff GK-9-21 1/2" AC-AN pattern of pin holders: 1----2 3456 -789- Next cable: GK 12-23 1/2 AC & AN other end GK 12-21?? 1/2 AC & AN pattern: 1--2 345 6-7-8-9 10-12 11 What are these for, please? SCR-542 or 522 ? ( Found with the -542 control boxes. ) Tnx- Hue Miller