To best of belief, washer / wiper controls moved to Stalk mount on column for '81. Not a change I cared for, also preferred the dimmer switch on the Floor. Another horrible change was the later eighties movement away from the knob style headlight switch in the dash. To a 'toggle" switch, i.e. GMT400 trucks. Uggh. I have a '78 LeMans tilt column, it's been cannibalized for parts, may? have that stalk, not sure, have to check yet.I checked and yes dimmer on the column, Wipers and headlights on Dash.