67 Camaro Wiper motor wiring/Test - Team Camaro Tech
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post #1 of 28 (permalink) Old Jul 25th, 14, 03:23 PM Thread Starter
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67 Camaro Wiper motor wiring/Test

So on my 67 I picked up a new motor. I installed it a while back but it did not work. i have been working on other things and the wipers have been waiting. Im now trying to figure out whats causing it not to work.

I put a test light on the motor and when i turned the switch on the light would work. Is there a way to test the motor to see if it kicks on? I have pulled it back out, and I have my switch removed but the wires still installed. I only have a test light, my voltmeter died and I won't be buying one for a few days. So my ultimate question is there a way to kick the motor over to see if it works in the first place?

Justin
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post #2 of 28 (permalink) Old Jul 25th, 14, 03:23 PM Thread Starter
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Re: 67 Camaro Wiper motor wiring/Test

Oh also its a three tab motor. I don't have the washer motor installed

Justin
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post #3 of 28 (permalink) Old Jul 25th, 14, 04:33 PM
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Re: 67 Camaro Wiper motor wiring/Test

I think the switch has to be grounded (where it mounts to the dash). 12v is sent from the fuse block to the wiper motor, then the switch acts as the ground in the circuit.

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post #4 of 28 (permalink) Old Jul 25th, 14, 05:06 PM Thread Starter
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Re: 67 Camaro Wiper motor wiring/Test

Yeah its been grounded, I just unattached it to inspect, i have a ground wire hooked to the housing now that it is not attached.

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post #5 of 28 (permalink) Old Jul 25th, 14, 06:49 PM
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Re: 67 Camaro Wiper motor wiring/Test

No wires connected
Jumper 12v battery to wiper 12v terminal. Ground other tabs one a time and wiper motor will run if good.

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post #6 of 28 (permalink) Old Jul 25th, 14, 07:28 PM Thread Starter
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Re: 67 Camaro Wiper motor wiring/Test

Hmm are you saying with nothing else attached to the motor, attach 12 volts to the tab, then ground the other two tabs indivuidually? I tried doing that, and all I got was some mild sparks where I touched the ground. This is with the motor sitting on the floor.

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post #7 of 28 (permalink) Old Jul 25th, 14, 07:48 PM
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Re: 67 Camaro Wiper motor wiring/Test

Don't ground the other tabs, ground the motor housing.
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post #8 of 28 (permalink) Old Jul 25th, 14, 08:35 PM
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Re: 67 Camaro Wiper motor wiring/Test

Quote:
Originally Posted by moses david View Post
Don't ground the other tabs, ground the motor housing.
Grounding the housing with 12v hooked up won't do anything.

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post #9 of 28 (permalink) Old Jul 26th, 14, 06:02 AM
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Re: 67 Camaro Wiper motor wiring/Test

If you look at this AAW wiring diagram- http://www.americanautowire.com/PDFL...20IN%206.0.pdf you will get a better understanding of the wiring of the windshield wiper motor. The motor gets its 12V power from the yellow wire (regardless of whether it is mounted on the car or on a test bench). The wiper switch is normally mounted into the dash and provides the "ground" for the circuit. The switch is mounted to the metal dash (which is the ground) and when the switch is selected to whatever position (Off, Low High, washer) it will ground that particular circuit at the motor. Like John (Vega$69) said, if you apply 12V to one side of the motor and then ground either the black (low speed) or Light blue (high speed) wires then the motor will operate (if it is functional).

Some of us have installed a newer type conversion wiper motor like the Detroit Speed Selecta Speed one. It is the same wiper motor as a 99ish cadillac and has 7 speeds. The main difference between this one and the old style one is that the Caddy one, power is routed through the switch and the wiper motor acts a the ground (internally).

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post #10 of 28 (permalink) Old Jul 26th, 14, 06:23 AM
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Re: 67 Camaro Wiper motor wiring/Test

One of our members posted this bench test diagram a while back. See if it helps you bench test your wiper.
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post #11 of 28 (permalink) Old Jul 26th, 14, 06:32 AM
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Re: 67 Camaro Wiper motor wiring/Test

Quote:
Originally Posted by 69-Pace View Post
One of our members posted this bench test diagram a while back. See if it helps you bench test your wiper.
As you can see if you have 12v to the motor (in or out of the car) and ground blue or light blue terminal with a jumper the motor will run.

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post #12 of 28 (permalink) Old Jul 26th, 14, 06:34 AM
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Re: 67 Camaro Wiper motor wiring/Test

Edi to my post- The 12v wire is the white one (not yellow).

John, you going to be around this weekend?

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post #13 of 28 (permalink) Old Jul 28th, 14, 08:59 PM
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Re: 67 Camaro Wiper motor wiring/Test

Remember that the motor itself has to have a good ground to the firewall. It has a grommet with a ground built in. That has to have a good contact with ground. So, even if the motor works out of the car in a test circuit, it may not work installed. Check that and the switch ground...


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post #14 of 28 (permalink) Old Aug 6th, 14, 08:54 PM
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Re: 67 Camaro Wiper motor wiring/Test

Hey Guys not trying to Hijack but I got questions about kinda the same thing. The previous owner did not see any point in wipers and I am starting with a kinda blank slate here! I have a 68

let me plz ask these questions.

Which way on the switch is off and which way is on? All the way clockwise (to the right) is OFF??? or is that position on/high? Hope this makes sense.

ALSO I took a few pics - in the wires in the pic can u guys help me identify which is what? The Solid blue wire is longer so I assume it was for something else? This is how they were when I got the car. You guys talk about the 3 wires being 12V power from the yellow or white wire, the black (low speed) & Light blue (high speed). In my pic the wires that I think are for the wiper motor are the Black with Light blue stripe, Black with Orange stripe, & orange with black stripe. That dose not match with what u guys have bin saying???


I seem to have power to the water pump but not to the wiper motor? Are they on different circuits from the fuse box?

I also dont understand about grounding the motor? The motor mounts with rubber bushings so how can that provide a ground?

That's about it - I think the info already posted answered all my other questions. Diagram was MOST helpful!!
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post #15 of 28 (permalink) Old Aug 7th, 14, 08:23 AM
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Re: 67 Camaro Wiper motor wiring/Test

Quote:
Originally Posted by Arkangel77 View Post
Which way on the switch is off and which way is on? All the way clockwise (to the right) is OFF??? or is that position on/high? Hope this makes sense.
Fully counter-clockwise/to the left is off. First notch to the right is low, second is high speed. Push for washer. When you push, the switch will rotate to low.

Quote:
Originally Posted by Arkangel77 View Post
ALSO I took a few pics - in the wires in the pic can u guys help me identify which is what? The Solid blue wire is longer so I assume it was for something else? This is how they were when I got the car. You guys talk about the 3 wires being 12V power from the yellow or white wire, the black (low speed) & Light blue (high speed). In my pic the wires that I think are for the wiper motor are the Black with Light blue stripe, Black with Orange stripe, & orange with black stripe. That dose not match with what u guys have bin saying???
Those multi color wires are not original. If you look at the fuse block in the engine compartment, the wires for the wiper motor and washer are across the top left. From the top left corner:

Black - Low speed
Dark Blue - Wash
Light Blue - High speed
Below the Black is Yellow - Power


Quote:
Originally Posted by Arkangel77 View Post
I seem to have power to the water pump but not to the wiper motor? Are they on different circuits from the fuse box?
No, they both get power from the Yellow wire. The Yellow wire actually should have two connectors on it and connect to both the motor and washer.

Quote:
Originally Posted by Arkangel77 View Post
I also dont understand about grounding the motor? The motor mounts with rubber bushings so how can that provide a ground?
There is a ground in one of the grommets. You should see a tab running from it to one of the rivets on the motor. That grounds the grommet. The grommet gets grounded when the screw touches it and the firewall. Make sure there is good contact between all of that. The wiper switch also needs to be grounded well through the body to the dash. This is what controls the motor.


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