Wiper problems
Thread Starter
Intermediate
Joined: Apr 2013
Posts: 38
Likes: 0
From: SNELLVILLE, GA
Wiper problems
So I have a 75 corvette, I restored most of the interior and the wipers worked fine before I took everything apart. Well, everything's back together and EVERYTHING works except the stupid wipers, so, I've grounded the switch, grounded the motor, changed the fuse, the only think that's working is the washer motor. I can press down on the switch and the pump works fine, but when I switch back and forth to change between speeds nothing happens. The motor and switch both work because I've installed them in another 75 I have and they work flawlessly... Now, bare with me, I'm 18 as of the 11th, me and my dad have collected corvettes for years, but I'm no expert. Please talk to me like I'm a child. All help is MUCH appreciated!!!
Le Mans Master
Joined: Aug 2006
Posts: 7,417
Likes: 1,554
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Don't drive on rainy days!
You are on the right track.
Check the fuse again, make sure it is good and passes power on both clips when installed.
The switch needs a ground, usually through the center console itself as long as the console isn't broken.
The wiper motor ground is black and also is a ground for the blower motor. That black ground wire connects to a starter or bellhousing bolt.
As said above Willcox has many how to's, here's one.
Check the fuse again, make sure it is good and passes power on both clips when installed.
The switch needs a ground, usually through the center console itself as long as the console isn't broken.
The wiper motor ground is black and also is a ground for the blower motor. That black ground wire connects to a starter or bellhousing bolt.
As said above Willcox has many how to's, here's one.
Melting Slicks
Joined: Apr 2002
Posts: 2,337
Likes: 14
From: Norfolk VA
You are on the right track.
Check the fuse again, make sure it is good and passes power on both clips when installed.
The switch needs a ground, usually through the center console itself as long as the console isn't broken.
The wiper motor ground is black and also is a ground for the blower motor. That black ground wire connects to a starter or bellhousing bolt.
As said above Willcox has many how to's, here's one.
Check the fuse again, make sure it is good and passes power on both clips when installed.
The switch needs a ground, usually through the center console itself as long as the console isn't broken.
The wiper motor ground is black and also is a ground for the blower motor. That black ground wire connects to a starter or bellhousing bolt.
As said above Willcox has many how to's, here's one.
Le Mans Master
Joined: Aug 2006
Posts: 7,417
Likes: 1,554
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Here's a better picture.
Yes, you unplug the 123 connector and attach your test wires directly to the blades on the motor.
Racer
Joined: Nov 2012
Posts: 340
Likes: 2
From: Port Washington WI
You might have to visit a parts store to find crimp on connectors that will clip onto the lugs on the wiper motor. Take the wiper motor to the shop and they can help you find the right connectors. You can use a motorcycle battery just as long as it's 12 volts. Small-medium sized alligator clips would be fine for the battery end of your test wires. Good luck!
