E.Murray

This should be an easy one. The PO butchered the wiring on this car and I'm trying to set it to rights. For the windshield wiper motor, the wiring diagram I have shows 4 wires. I have a plug with 4 wires (not plugged into anything) right by the wiper motor. Granted, 2 of the wires are cut off... But the motor just has 2 black wires coming out (with no plug). Is the motor wrong or is the wiring diagram wrong, or am I missing something?

ddawson

What year? For a 69 the connection is were I see a missing screw.

ddawson

Here is a crappy picture of mine.

JC68

From your other posts I see you list your car as a 1968. The 1968 wiper motor and wiring are unique. The picture below show what I had on my 68.

John

JC68

One more.

Easy Mike

Maybe, if we knew your model year.

E.Murray

Oops. Very early '68 (but with hodge podge of parts...).
I'm going to sort through it today. Thanks!

E.Murray

Yours looks like it still has 3 wires where I only have 2. Is that right?
Also, I assume the vacuum connections are for the wiper door and can be left off (all that is missing on mine).

JC68

I'm no wiper motor expert, but that is the original motor to the car with the 3 wires. Check to make sure you have a 1968 motor. It should be stamped 5044683 on the end cap if it is.

Yes the vacuum connections you see are for the wiper door and headlights and don't need to be in place for the motor to work.

John

loup68

The differences between the 68 wiper motor wiring circuit and the 69 is mind boggling. I wanted to change mine about 35 years ago and gave up on the idea. And please be aware that the GM "electrical engineers" in all of their wisdom of wiring millions of cars beforehand, control the 68 wiper motor by disconnecting the GROUND!!! Not the hot. The 68 wiper motor is always hot, even with the key off and out of the car. Many 68's have shorted and burned up because of this. I have a disconnect switch on my battery, because of this fact. I have had my coupe for 43 years next month. Lou.

shmoky

Oh Boy A '68 wiper motor

you need to contact Ernie at Willcox Corvette. Especially his video on how to bench test your motor. This test will show you if it is working properly and more important HOW it works.

I've spent many an hour working on mine.
Another member to talk to is DZRick.

found the link to the post for the bench test by Willcox Corvette

https://www.corvetteforum.com/forums...d-69-72-a.html

You WILL want to save this link for sure.

Have fun


shmoky

0Willcox Corvette

Here are the video's and some really good threads on the 1968 wiper motor.

Wiper Motor Bench Test 68 Ver 1


Wiper Motor Bench Test 68 Ver 2 "Follow up"


Great threads on 68 Wiper motors can be found here:

Mister Willcox, 68 wiper motor

68 wiper problems

Corvette Wiper Switch Testing 1968-1976