so...reed switch...old bomb makers, meaning anti handling on old watches...it can create anti static energy on the radio entrancy on top of the lock...means jam signal, but still working on the central...and by contact the reed switch extremities on the lock combination screw, and at the same time...the screw cable...the 2nd screw...which is the mode.."normal open"...aligned as ...n.º1 NC normal closed n.º2 NO normal open n.º 3 COM common n.º 4 RES resistor...still i don't know about the resistor wire...