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Does anyone know where I might be able to locate one of these for my 68 wiper motor? The latch assembly does not want to stay in position to keep the vacuum control soleniod de-energized until the wiper switch is turned on.
Thanks
Thanks
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Re: 1968 relay switch/latch assembly source
Bryan:
I am not sure exactly what part you need. For items on my 68 I have had luck with Dr. Rebuild or Lectric Limited.
Good Luck, John -
Re: 1968 relay switch/latch assembly source
John,
It's the relay assembly located in the wipermotor gear box. When the wipers are turned off and they move to park, a coil inside the gear box is de-energized allowing the latch to drop down in a position to open a switch that's also located within this same assembly.
This switch also completes the circut to tach mounted wiper relay vacuum solenoid.
My problem is that there is to much play in the latch. When the wipers are turned off and move to the park position. The latch is slipping off the switch, allowing current to continue to energize my vacuum solenoid. I was wondering if you could possibly purchase this relay assembly without buying a new wipermotor?
Thanks,
BryanComment
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Re: 1968 relay switch/latch assembly source
Bryan-----
I'm still not completely clear on which part that you're talking about. There is no "relay" located within the wiper motor assembly. However, there is a magnetic switch which has a cylindrical device on it which is about 3/4" in diameter and about 1" long. If that's the part you mean, it was originally GM #4919647 and later GM #22048273. Both parts are, unfortunately, discontinued and no longer available from GM. Incidenatlly, your 1968 wiper motor assembly is also GM-discontinued, but available in rebuilt form through Delco and others.In Appreciation of John HinckleyComment
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Re: 1968 relay switch/latch assembly source
Thanks Joe,
I was just repeating the terminology from my 68 chassis service manual.
They are calling it a Relay Switch and Latch Assembly Terminal Board.
I guess I'm going to have to tinker with this assembly to get it to do what it's supposed to do or buy a another wiper motor.Comment
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Re: 1968 relay switch/latch assembly source
Bryan:
Sorry I can't help you. I think I know what you are looking for, but I have not seen a source for a replacement. You might want to call someplace like Chicago Corvette or Virginia Vettes and see if they will refer you to the person who rebuilds the wiper motors for them. Maybe they have a source.
Good luck, I got a rebuilt motor a year ago and I think it is wired wrong inside the motor. The 68's are tricky.
Regards, JohnComment
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Re: 1968 relay switch/latch assembly source
GM calls it a mag-switch. I have bought many in the past. They should still be available.Comment
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Re: 1968 relay switch/latch assembly source
Wayne the magswitch works okay. It's the latch that's the problem. Too much play. It doesn't want to keep the switch open to the wiper door vacuum soleniod. When the wiper switch is turned off, the magswitch is de-energized,
dropping the latch down into position to put the motor in the park position. When all this is done the latch should be holding the switch open that supplies the power to the wiper door vacuum solenoid. Since the switch is still made, it keeps the wiper door solenoid energized which keeps the wiper door open and a drain on the battery because that connection is ahead of the ignition switch.
John, what makes you think your wiper motor is wired wrong?Comment
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Re: 1968 relay switch/latch assembly source
Bryan:
When I put the motor in I had to connect the red from the harness to black on the motor and the red on the motor to black on the harness to make it work at all. If you hook it up as shown in the corvette restorer article (winter 1987) then the wipers don't work at all. I have traced the circuits in the harness, all check out. Since the red in the harness is power from the ignition switch and is always hot it drains the battery when I have it hooked up.
One of these days I will have to have my spare motor (correct dated) restored by an expert and then maybe the problem can be corrected. I had a previous posting on the problem about 6 months ago, have not figured it out yet.
JohnComment
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Re: 1968 relay switch/latch assembly source
John,
If you would like a copy of a Chevrolet service news bulletin that goes into great detail on how the 68 wipermotor/vacuum system works. E-mail me and I will send a copy to you. Believe me, it has given me a complete understanding of how all the electrical, vacuum and mechanical components have to work together for a properly working 68 wiper system.
Joe Lucia is the person who turned me on to this bulletin. Thanks Joe!Comment
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Re: 1968 relay switch/latch assembly source
John,
If you would like a copy of a Chevrolet service news bulletin that goes into great detail on how the 68 wipermotor/vacuum system works. E-mail me and I will send a copy to you. Believe me, it has given me a complete understanding of how all the electrical, vacuum and mechanical components have to work together for a properly working 68 wiper system.
Joe Lucia is the person who turned me on to this bulletin. Thanks Joe!Comment
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