I've had the wipers die in the middle of a monsoon before when I was in my dads '68 Chevelle wagon,that "clamp" with the 2 nuts that secures the ball stud on the motor to the wiper linkages failed..
I was able to limp to a parts store,they told me it was a "dealer only" part..
I knew there was a junkyard down the street from the store,they suggested I try there..
I got one off a Impala that was the same--the guy at the junkyard saw how soaked I was--he felt bad for me and said "I'd take off those wet shirts and dry off ,or else you'll be sick tomorrow"--he then handed me a large plastic trash bag out of the box that fits a 55 gallon drum,and said "here--poke a hole in the bottom in the middle for your head to fit through,and one on each side for your arms"--it made a dam good poncho!..when I came back with the parts,the guy just laughed and said "take it-you've had a bad enough day already!"..
I now carry one or more of those big "contractor" garbage bags in all my vehicles now,you never know when you'll need a raincoat or have to lie on wet ground if you have trouble on the road...I carry one in my pocket at outdoor concerts or other events too..