stinger12

Long time no talk everyone.

I am building a powerfeed for a mill right now, using a leftover wiper motor from my corvette build. The black with pink stripe wire, which is coming out of the motor housing (has a white fiberglass sleeve on it, left side of the picture) - where is this supposed to go to? I am trying to bench test this.

JBrooke825

Go to Willcox’s website . Everything you need is there!

stinger12

looked on their site, and this wire doesnt seem to be tagged in their diagrams.

Hopefully they will see this post!

stinger12

Bump

Mooser

That wire goes to the tab on the stop relay



I've posted a bunch of pictures showing where the various wires went that might help
https://www.corvetteforum.com/forums...-assembly.html

M

stinger12

I will verify the wiring location on my unit tomorrow night. What are the major differences between a 72 motor and a 76 motor?

Mooser

https://www.corvetteforum.com/forums...post1598186791
just the red door limit switch wire I believe
M

bmotojoe

Good information from your link above!
The park switch however is a little different from your 72.
Same motor but the 75-82 used a different park switch, the Black/Red wire attaches at the same point in photo above on the park switch.
You will want to follow the Willcox Video to test the motor.
When the wiper motor switch is turned off and the relay drops out motor runs at low speed. The set of contacts below the lug remain closed until the park paw comes around and locks into position opening contacts, motor stops.

bmotojoe

Also looks like your spring is just hanging there so watch for it when you remove the switch (Red Arrow).
Should be hooked here (Red/Lt.Blue Arrow)

stinger12

Connect the letters to the numbers, much easier this way.

Mooser

apparently different than mine but here's a bump
M

stinger12

Bump

stinger12

One last bump

Mooser

M

Mooser

Again, this is for my 72 (wiper door switches shown so ignore all that circuit)
Since you're trying to use the motor for something totally different anyway you should be able to wire it without all the other bits anyway

The case is grounded (that I believe is the armature ground shown to the upper left of the motor diagram)
The black wire from the motor is grounded either through the resistor (approx 20 ohm) or directly for high and low speed on the shunt wiring
The black/pink wire is the power for the motor (12+)

The high/low switch really just grounds the #3 spade (via the relay) so that it bypasses the resistor on that shunt field (black wire)

HIH
M

bmotojoe

I thought you had this figured out.
Using your 3rd photo in post 10 for switch & 12vdc Circuits.
1=Circuit 91
2=Circuit 93 +12vdc
3=Circuit 92
Your Shunt Field (B black wire) is soldiered to the SHUNT resistor of the park switch. Still not 100% you are connected at the right point of the Shunt?
Part of your Series Field (C Red Wire) is soldiered to the park switch OK.
So the wires RED and Black/Red stripe wires are also part of the (Series Field).
The ones sticking out of the motor A&C get connected together.
For bench testing you will need a 12vdc source (Battery).
Connect +12vdc to the center contact (2) Circuit 93
Ground the motor case Circuit 150.
Make up a couple jumper wires long enough to ground to the motor case and 1 & 3
When 1 & 3 are grounded your motor will run on low speed. 3 = Circuit 92 & 1 = Circuit 91
If you remove the ground on 1 (Circuit 91) you should have high speed
If you re-connect 1 & 3 to ground again you will have low speed.
Remove 3 (Circuit 92) from ground the motor should park and stop.
Here is how I bench test a 77.
Your wiper switch is different but circuits are the same on yours.

bmotojoe

After checking your Series & Shunt winding park switch connections are correct.