C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Wiper motor

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Old Dec 22, 2022 | 06:38 PM
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Default Wiper motor

Is there a way i can bench test the wiper motor and are the covers available for sale?
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Old Dec 22, 2022 | 06:51 PM
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Face- value. Looks toasty, fried.
Simply put 12v on ground & positive 1 terminal low speed.
2nd high speed.

** A new cover/ module replacement.
Maybe, challenging.

Last edited by THE 383 admiral; Dec 23, 2022 at 05:39 PM.
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Old Dec 22, 2022 | 08:28 PM
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The wiper motor is grounded by a wire to the conector on the cover. If you run a ground wire to the wiper motor, high and low will run without the cover.
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Old Dec 23, 2022 | 12:21 PM
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I repaired the broken cover on mine with fiberglass. It worked well and it's still holding up. Mine looked a lot like yours.
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Old Dec 23, 2022 | 01:17 PM
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""are the covers available for sale""

I have tried for 6 months and used is the only thing that can be found.
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Old Dec 23, 2022 | 01:22 PM
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I haven't been able to find a new replacement cover and module. I'm hoping someone starts making new ones soon.
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Old Dec 23, 2022 | 03:11 PM
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If anyone is good with CAD and can make a file for the cover they could be 3d printed pretty easily. I would be willing to print them for whoever needed one but I'm not good enough with CAD or Fusion360 to make the .stl file for it.
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Old Dec 23, 2022 | 06:34 PM
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Thank god the yards are loaded up with c4's. I picked up this one for $20 today.
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Old Dec 23, 2022 | 06:42 PM
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Thank god the yards are loaded up with c4's. I picked up this one for $20 today.

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Old Dec 23, 2022 | 06:45 PM
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Does your old and this 'newer' one have matching # of terminal on the end frame? Early have 2 terminal and later have 3 terminals.
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Old Dec 23, 2022 | 07:24 PM
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Which set of connectors, there are 3 sets. Top of the cover plate, edge of unit and end of motor.
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Old Dec 23, 2022 | 07:30 PM
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Originally Posted by johnfin
Which set of connectors, there are 3 sets. Top of the cover plate, edge of unit and end of motor.
The end frame 'cap' for the armature.
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Old Dec 24, 2022 | 02:55 PM
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I am in fat city, both have the 2 pin connector. I got my part off an 84', plentiful. Wish there were more 85's, only came across one so far, some 86's and 90s'.
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Old Dec 24, 2022 | 03:01 PM
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There's a very short harness/wire connected to that end of the motor. On your next trip you might want to snag it.
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Old Dec 24, 2022 | 03:44 PM
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You mean this one. LOL not my first rodeo. The real bummer was someone broke off one of the motor bolts on my car. I managed to use a mirco torch with visegrip and get it out.
As far as CAD, I know it well and was thinking about making those covers too but you really need to have a 3d scanner to get it right. I dont want to just draw a part, it needs to be exact.
I cant believe dormans does not make one, must be vette specific.

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Old Dec 26, 2022 | 04:56 PM
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The biggest problem are the transistor numbers. They are GM numbers stamped on motorola parts and there are no cross references for them. One of the Corvette parts dealers occaisionally orders a batch so someone knows the numbers, It's that I / we don't.
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Old Dec 26, 2022 | 05:52 PM
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Do other gm cars use this same wiper motor?
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Old Dec 28, 2022 | 05:11 PM
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Originally Posted by Vets-Vet
The biggest problem are the transistor numbers. They are GM numbers stamped on motorola parts and there are no cross references for them. One of the Corvette parts dealers occaisionally orders a batch so someone knows the numbers, It's that I / we don't.
Here's a good guide for resisters if you can see the colored bands.
https://neurophysics.ucsd.edu/course...storcharts.pdf
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Old Dec 29, 2022 | 03:08 PM
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Resistor color code is forever stuck in my head from the Navy...... Bad Boys Rape Our Young Girls But Violet Gives Willingly.
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