A500 in a 1970 A Body

1992 518,s are a 2 wire electric plug,,it is for the over drive,,1992 was the last year of non electric lock up,,it may be and ,my guess like the earlier lock ups centrifical, 1993 and newer have a 3 or more wire hook up,,for the lock up,controled by computer,,therre are 2 fluid ports on the side of the trany 1993 and newer,, they can be made to shift into and out of lock up by hyd pressure,,and electirc,,with out using the computer,