My buddies '79 didn't "park" the wipers but my '77 and '78 did. Has to do with the motor and/or switch, IIRC.
ETA: Meaning I agree with SirRonyno0!
@nd Edit: Meant to say, "Oh no, I bought a Cardone unit last week for the S10 I inherited from my dad. Now I find out their junk! That's the way...