Upon deflection of the test contact member to a test position, the test contact member is brought into {HEAD ~ contact} with the third conductive member thereby causing same to be deflected from its rest position to a test position in which it is not in contact with a least one of {TAIL ~ the pair} of conductors 
Upon deflection of the test contact member to a test position , the test contact member is brought into { HEAD ~ contact } with the third conductive member thereby causing same to be deflected from its rest position to a test position in which it is not in contact with a least one of { TAIL ~ the pair } of conductors
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH