My old Cutlass.....When I bought it, there was a c-clamp on the wiper motor, I had no clue why it was there, didn't seem to be holding anything, motor was bolted in correctly, so one day I decided to remove it. The next day it rained and I had no wipers :x , couldn't figure out why, they worked a couple weeks ago. Then I remembered that stupid c-clamp, that I had removed, put it back where it was and I had wipers again, lol. I guess installing a ground strap was too much effort .