The following actions have to be taken to prevent damage to the ISI from a lightning strike on Mt. Wilson. All cables, except the AC power cords and the grounding wire, between the two trailers have to be disconnected on either end. These cables are marked with fluorescent red tape.
Junction is underneath false floor in front of the electronics rack in the optics room.
Push back black plastic insulation to expose junction. The cable is secured with two screws that need to be unfastened. Junction is underneath false floor near the vacuum pump on the back of the grey box that has the BNC connectors on the front panel. The cable is secured with two screws that need to be unfastened. Attach magnetic mount of radio antenna to the left side of the vent so that antenna is pointing to the left instead of up.