1973 Windshield Washer Question

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Apr 24, 2008 | 03:58 PM

donnd

Thread Starter

Racer

Joined: Dec 2007

Posts: 404

Likes: 2

From: Kingston Ontario

1973 Windshield Washer Question

Whenever I turn on my windshield wipers the washers also come on and don’t shut off. I’m wondering if I have the wires crossed at the pump.Can anyone tell me which side the yellow and blue wires go to (right side being drivers side)
If this is not the problem I’m thinking the switch. Any other thoughts.
T.I.A.

Apr 24, 2008 | 04:16 PM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,285

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From: Westminster Maryland

On my 71 the light blue is driver's side, yellow is middle and light green is passenger's side in the connector.
Regards,
Alan

Apr 24, 2008 | 04:38 PM

donnd

Thread Starter

Racer

Joined: Dec 2007

Posts: 404

Likes: 2

From: Kingston Ontario

Quote:

Originally Posted by Alan 71

On my 71 the light blue is driver's side, yellow is middle and light green is passenger's side in the connector.
Regards,
Alan

Thanks Alan . looks they made a change i n '73 (to make my life difficult) only 2 wires;

Apr 24, 2008 | 06:02 PM

Red70vette

Burning Brakes

Joined: Jun 2004

Posts: 872

Likes: 3

From: Cortlandt Manor New York

Be thankful your washer works. I can't get mine working for the life of me.

Apr 24, 2008 | 07:26 PM

donnd

Thread Starter

Racer

Joined: Dec 2007

Posts: 404

Likes: 2

From: Kingston Ontario

Any '73 guys thst can take a quick look at thiers?

Apr 24, 2008 | 08:51 PM

weimer20

Burning Brakes

Joined: May 2007

Posts: 945

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From: Ventura California

If I wasn't in Ventura, Ca and my 73 in Sherman Oaks, Ca, I'd run out and check for ya. As it stands, I looked at the electrical schematic that I have saved on the computer and it shows a yellow and dark blue next to one another. It also shows a black, yellow, and light blue attached to the same motor, Looking at the schematic ( and I don't know how it's oriented as I don't have my car here) looking at it from left to right - appears like a 3 wire circuit consisting of black, yellow, and light blue (maybe 3 wire harness?) and then it shows two other wires separate from the other 3 consisting of yellow and dark blue in that order. Don't know if this will help at all. Sucks not having the car at my fingertips to look it over.

Apr 24, 2008 | 09:07 PM

donnd

Thread Starter

Racer

Joined: Dec 2007

Posts: 404

Likes: 2

From: Kingston Ontario

Quote:

Originally Posted by weimer20

and then it shows two other wires separate from the other 3 consisting of yellow and dark blue in that order. Don't know if this will help at all. Sucks not having the car at my fingertips to look it over.

That answera my question.I do have the connections correct,I wll try the switch next. Hope you get to your car soon.Thanks Again

Apr 24, 2008 | 09:12 PM

'75

Le Mans Master

Joined: Dec 2007

Posts: 6,422

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From: McHenry Illinois

I believe the pair of wires, dark blue and yellow, are for the washer. Try unplugging them and then run the wiper. If it still runs the washer, then the problem is in the washer mechanism. If it doesn't run the problem is electircal. The yellow wire should have 12 v with key on. The dark blue gets grounded by the washer button to make the washer work. Somebody correct me if needed, but I think that system uses a small solenoid to engage the pump mechanically to the wiper motor, causing it to rotate and pump. I seem to remember this as a common problem on early 70's chevys, but I've been working on heavy equipment for 20 some years and some of the memories from being an auto mechanic are getting fuzzy.