I do. but its 1/4 mile away with the engine out. UMMMMM i will remember. I THINK it is a toggle on the same lever as the front wipers, but you prolly woulda found that. its been a while since I drove it. hold on I'll check the chilton book OK it says the switch is on the dash somewhere, and it is a combination switch.
OK i just wasted ten minutes in hasting manual and found nothing. If i remember right, though, try pulling the arm left of the steering wheel torwards you, and i beleive it will stay and keep the wiper on. maybe the other one, good luck.