Wiper door mechanism

[CaptainK]

I'm currently doing an electric wiper door conversion on my 1968, slowly over time because of well.... "1968" issues, "bubba" previous owner, and also I have a baby taking up a lot of time.

Anyway, I've currently got the wiper door mechanism off the car for various reasons. As you can see from the photo, the previous owner oversprayed it blue when the car was resprayed ages back. I don't mind it being blue, but its not massively consistent. Granted you won't see the current black bits where the fixing brackets and screws are as they are hidden within the bulkhead thingy. To be fair, most of it you don't see as the wiper door and grill covers it.

I was wondering what colour the wiper door mechanism was originally? I'm tempted to rub it down and respray it.

 

[Emc]

Originally it was satin black

 

[Mr. Cricket]

Great fun coming your way reinstalling the wiper door. I took mine off the '71 just to clean up the mess under there and what a pain it was getting it back on.

Another conformation it was satin black

 

[CaptainK]

Nice one, thanks both

 

[CaptainK]

Re-installed the wiper door and the physical side of it went really well. Then it all went downhill as my previously working (but hadn't been connected up to linkage) wiper door electric conversion stopped working, and the wiper door override light is permanently on. Got the motor working again, but ran out of time to investigate "override" bulb. Gotta be a short or something somewhere, as it was working fine beforehand. All fun and games really isn't it? I think I might have an idea, but getting chance to have a look is hard. Too busy!

But if anyone has any ideas what the bits on this wiring diagram is that'd be great - i.e. the ground wire from the "over ride switch" (bottom right) goes up to a upside down "T" shape thing in the top left corner, next to the firewall limit switch bit (I know where that is in the engine bay, and in the 1968 only that only ever has ground through it 0 69 onwards its positive). But what does the symbol mean? And what is the component? Unhelpfully it then leads that to another symbol just below it that looks like "Stone henge". What component is that? Both of those black wires from "Upside down T" and "Stone Henge" both go to the override lamp you see, which illuminates when it gets 12 volts. So evidently 12v is now going down it from somewhere. If it helps, its from a permanent live - turns on when I reconnect car battery (normally disconnected).

 

[teamzr1]

Re-installed the wiper door and the physical side of it went really well. Then it all went downhill as my previously working (but hadn't been connected up to linkage) wiper door electric conversion stopped working, and the wiper door override light is permanently on. Got the motor working again, but ran out of time to investigate "override" bulb. Gotta be a short or something somewhere, as it was working fine beforehand. All fun and games really isn't it? I think I might have an idea, but getting chance to have a look is hard. Too busy!

But if anyone has any ideas what the bits on this wiring diagram is that'd be great - i.e. the ground wire from the "over ride switch" (bottom right) goes up to a upside down "T" shape thing in the top left corner, next to the firewall limit switch bit (I know where that is in the engine bay, and in the 1968 only that only ever has ground through it 0 69 onwards its positive). But what does the symbol mean? And what is the component? Unhelpfully it then leads that to another symbol just below it that looks like "Stone henge". What component is that? Both of those black wires from "Upside down T" and "Stone Henge" both go to the override lamp you see, which illuminates when it gets 12 volts. So evidently 12v is now going down it from somewhere. If it helps, its from a permanent live - turns on when I reconnect car battery (normally disconnected).

Would be easier to read if you break up in smaller sentences you wrote as hard to follow as you have it
And the schematic is confusing and not sure if it is correct

I assume what you mean by upside down T at top left is the connections to the limit switch
Do not know what "Stone henge" means but if you mean right below limit connections
I think that means where the relay shown on right connections

Look at the blue arrows I inserted and as to the notes at bottom follow the black stars I inserted

I made the black and blown lines for override wider to easier to follow those wires

The red boxes you have on top right, that light gets 12 volts when limit switch is in open position
Make sure the over-ride switch at bottom right is wired and functional

Make sure the limit switch is wired correctly and I assume when wiper door is fully shut it hits the
top of limit switch to push down the button on top to open the circuit

 

[CaptainK]

Thanks Team, and sorry for my waffle.

This bit is the "Upside down T" below the word "Ground":


I can see that the "Upside down T" on the right is for the Firewall Limit Switch (which is ground based on a 1968), but didn't know what the left hand side "Upside Down T" was.

By "Stonehenge", I'm referring to these that are just below the bit above:

I can't work out what actual physical component that was supposed to be representing, and more to the point where that component is.

But looking at the diagram again after your labelling has made me realise the blimmin obvious wording at the bottom that says "If the ground has fallen off the override switch bracket then the override lamp will illuminate". So that's probably a good thing to check. And there I was trying to focus on the components in the diagram and what I might have upset when wiggling wires around, and missed the obvious text at the bottom.


Oh and in case you wanted to know why I called it Stonehenge, it looks a lot like the stones at Stonehenge (famous landmark in the UK) - aka the two pillars with a stone on top:



Oh and in case anyone wanted to know, I believe Corvette changed the wiper wiring from 1968 to 1969 from ground based switching to positive switching because on 1968 the wiper motor is always positive connected even when the key is out of the car. So the battery goes slowly flat. Swap it around to positive switching and all good. Well, just a theory I read and it makes sense. I keep my battery disconnected anyway when car not is use.

 

[teamzr1]

Maybe the T and hinge is terminal blocks on the firewall that the wires connect to ?
Or is where relay is wired to ?

In any case take an Ohm meter and one of the probes connect to the over-ride switch shown at bottom right
and other probe to the brown/white wire at one side of the limit switch and make sure that wire is good

Take one side of OHM meter to one side of the limit switch and other probe to the other side of the switch and see what the meter shows and then press the button on top of the switch and see if that works correctly

With key on, engine off, when you press down on limit switch does the over-ride light go on and off ?

Does the 12 volts using a multi meter for D/C voltage show 12 volts when the limit button is pushed and then no light when not pressing the limit switch button ?