Wiring limit switches using 2 core shielded cable. 1st wire from farthest switch back to board, 2nd wire daisy chained through all other switches and back to board ... the shielding ... one end to my central grounding point ... My question is what do I do with the other end? Attach a cable and run it back to the ground point? Leave it alone? what?

Sorry about the question ... electrics are not my strong point.