68 wagons, Chevelle or full size, with rear power window have a switch that, I believe, will work. This is a pic of a 68 rear window switch (top) along with the mounting bracket. The other switch is an NOS 69 switch along with the mounting bracket and face plate. Although both are rear window switches I believe they will work for the power top. Not all 68 rear window switches are black also not all have the long finger tab. Also there are 4 spring clips, not shown, that hold the switch in the bracket.