To jump out all the locks you put the factory jumper from the number 1 front terminal to the number 5 rear terminal. To isolate a defective interlock or defective cable, leave the jumper in the number 5 rear terminal but move it from front number 1 to front number 2. Then plug each interlock cat five cable into number 1 front terminal individually. I hope this makes sense, if not let me know.
