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Only 4-5V at the socket for turn signal and stop.
Posted by: Paulsgt ()
Date: September 15, 2020 10:32AM

Hello Experts,

I have a strange(?) problem with my 65 Monza convertible. The turn signal and stop (brake) light does not work on the driver's side. I have traced with a meter and confirmed that I only have 4-5volts at the socket. I also traced it back to the main connector at the firewall and same voltage there. What should I check next?


Thanks very much!

Enjoy the Corvair!

Paul Sergeant
CORSA Central Division Director / CORSA Treasurer
Lee's Summit, MO
CORSA since 1975
Member – HACOA, Corvair Minnesota, CORSA, Little Indians, POCI


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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: 2ragtops ()
Date: September 15, 2020 10:44AM

Sounds like maybe your cancelling switch is bad, and I think there is a ground wire in there also. I would look for bad grounds.

Bob Bauer

Show-Me Corvairs

1966 Monza Convert 140 P/G with A/C, plastic wheel with tele-column am-fm posi-traction
1966 Corsa Convert 180 wood wheel tele-column am-fm sport steering posi-traction
1965 Corsa Coupe Crown V8 temporarily red lined for repair
House Springs, Missouri

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: joelsplace ()
Date: September 15, 2020 10:54AM

Did you check both sides of the connector at the firewall? If it is low on the body side the next place to check is the turn signal switch output. If that is ok then the wire from the switch to the firewall connector is bad.
Where are you grounding your meter when you check the voltage?
I'm with Bob on the turn signal switch is the most likely problem

Joel
Northlake, TX
5 Ultravans, 113 Corvairs and counting...

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Paulsgt ()
Date: September 15, 2020 11:05AM

Turn signal switch is new from Clarks. Any chance it's the blinker? It's an electronic one.

How critical is the ground clip at the base of the steering column on the two curved connectors that come out of column?

Thanks! Keep the ideas coming.

Enjoy the Corvair!

Paul Sergeant
CORSA Central Division Director / CORSA Treasurer
Lee's Summit, MO
CORSA since 1975
Member – HACOA, Corvair Minnesota, CORSA, Little Indians, POCI


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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: larry202br ()
Date: September 15, 2020 11:17AM

Does it make any difference if it's being used as a brake light or as a turn signal?
That could give you a clue.

Remove the flasher and jumper the connector, see if that makes a difference.

1961 rampside with a 65 / 67 110 engine, car four speed.
1965 convertible
1966 Custom two door/four door 180 Turbo.

KC0SKX
Olathe, ks
HACOA

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: joelsplace ()
Date: September 15, 2020 11:20AM

That's why I asked about where you are grounding your meter. If the meter has a good ground the grounds in the circuit don't matter for the reading.
Just because it is a new switch doesn't mean it is good. When I'm troubleshooting parts that have been recently replaced are the most suspect. If you had a bad ground in the switch area then both light or even all 4 would have low voltage.

Joel
Northlake, TX
5 Ultravans, 113 Corvairs and counting...

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Paulsgt ()
Date: September 15, 2020 12:11PM

Yes, Infant mortality. BTDT.

I found it. There is a clip (ground) on the connector at the base of the steering column. I did not have that attached to anything. I'm not totally sure where that attaches but That was my problem. Just have to clip it to the right place now.

Thanks for your suggestions/advice.

Enjoy the Corvair!

Paul Sergeant
CORSA Central Division Director / CORSA Treasurer
Lee's Summit, MO
CORSA since 1975
Member – HACOA, Corvair Minnesota, CORSA, Little Indians, POCI


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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Lane66m ()
Date: September 15, 2020 12:14PM

What is the voltage at the body harness to fuse box harness connector?

There is a colored schematic in this forum link that will help to check all connections.

[corvaircenter.com]

Al
Georgia

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Lane66m ()
Date: September 15, 2020 12:17PM

I didn't think that clip on the curved connector did anything except to hold the connector to the structure. If it fixed it, it was because of a loose connector.

Al
Georgia

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Paulsgt ()
Date: September 15, 2020 01:07PM

I put an alligator clip lead between the clip and ground and everything started working. The clip does have teeth on it so I assume it needs to bite into metal for grounding purposes(?)

Enjoy the Corvair!

Paul Sergeant
CORSA Central Division Director / CORSA Treasurer
Lee's Summit, MO
CORSA since 1975
Member – HACOA, Corvair Minnesota, CORSA, Little Indians, POCI


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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Lane66m ()
Date: September 15, 2020 05:20PM

I am going to have to pull my 66 More door turn signal switch/harness connector off the structure to see if it goes bonkers. Also test to see if any wire is connected to the metal clip on the outside.

Got me curious since I have left it off the structure and it still worked properly.

Al
Georgia

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: RexJohnson ()
Date: September 15, 2020 06:31PM

That is not a ground clip it just holds up the connector. The connector is not completely snapped together. Pinch both ends of the connector with some big pliers. Sometimes you need 2 pairs to do both ends at once.

RJ tools
Salem,Oregon

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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Paulsgt ()
Date: September 15, 2020 06:59PM

OK. Could very well be that I did squeeze the connector together more. I will try the big pliers to close that connector all the way. Thanks Rex.

Enjoy the Corvair.

Paul Sergeant
CORSA Central Division Director / CORSA Treasurer
Lee's Summit, MO
CORSA since 1975
Member – HACOA, Corvair Minnesota, CORSA, Little Indians, POCI


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Re: Only 4-5V at the socket for turn signal and stop.
Posted by: Lane66m ()
Date: September 16, 2020 03:18AM

Thank you, Rex. You saved me some time on a useless goosechase. I thought my memory was correct this time.

Al
Georgia

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