Corvette C3 Forum 1968 through 1982

Wiper/Washer relay

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Old Mar 1, 2026 | 11:05 AM
  #11  
Rick S's Avatar
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Default 72 wiper motor wiring

Do you have the wiring diagram you can share. I had my pump rebuilt but still can't get it to run. There is a three-prong connector, single red wire connector, then ground. I am trying to bench test my motor before contacting rebuilder as I am assuming I have an issue with my wiring. The switch opens the vacuum door but will not turn on wipers.

Originally Posted by filstoy
I've got a 1971 Vette which has had some awful cobbling on the wiring. My current project is trying to get the wipes working again. They only work when you push the switch in for the washers. I have already replaced the switch before I got a wiring diagram and the service manual but that didn't do the trick. Now that I've got the wiring diagram, I'm trying to troubleshoot and repair the proper way instead of guessing. My problem is there is a wiper/washer relay in the diagram but I can't seem to find it on the car. I looked under the hood, dash, and by the fuse box and I cant seem to find it. I know it exists because I've seen it in the parts catalogs. Is it hidden or has that been cobbled out too? I could probably follow it back from the switch but it's zero degrees here today so if someone could tell me where it's suppose to be I would certainly appreciate it. Thanks.
 
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