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Backfeed through ignition switch

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Old Sep 9, 2018 | 01:12 PM
  #21  
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Originally Posted by Brian


I’ve been shutting the battery off. But there is a perisidic draw.

I thought it was the relay for the Vintage Air, but it is the main relay located on the right side of the radiator support.
What relay are we talking about? Horn relay? Voltage regulator?
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Old Sep 9, 2018 | 01:14 PM
  #22  
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Does this mean you've found the issue or just which relay it is?
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Old Sep 10, 2018 | 04:54 AM
  #23  
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There is only the horn relay and the voltage regulator in that area unless somebody added headlight relays or electric fans....

The horn relay buss ia a popular (and correct) location for accessory feeds so the latter situation could be the case...

A finger placed on either device while connecting the battery should tell you what is activating while connecting the battery....or disconnecting power from the device to see which one does NOT activate with power applied.

The A/C compressor is also in that general area and possibly being called to engage when power is applied - that can be quickly checked by pulling the bullet connector wire off the clutch.

The Vintage Air relays are in the same area under the dash as the evaporator on most installs...

Last edited by Frankie the Fink; Sep 10, 2018 at 04:56 AM.
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Old Sep 10, 2018 | 05:16 AM
  #24  
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Originally Posted by 65GGvert
The only other explanation I can think of is you lost a ground somewhere and the voltage is feeding back through another device. I don't see how it could be the ignition switch. It's going to take a voltmeter/ohmmeter and some troubleshooting.
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Old Sep 10, 2018 | 05:05 PM
  #25  
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It was the voltage regulator that was clicking when the battery was turned on. Never done that before.

I brought the car to a mechanic and he feels that I have a bad ignition switch, as I first thought. Even the other two switches I ordered he feels are not working correctly. One was a Standard brand assembled in Mexico, and the other one was from Amazon also in a Standard box with a “made in China” sticker.

I am gonna look for a used ignition switch for a 63 or 64.
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Old Sep 10, 2018 | 05:32 PM
  #26  
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I think you're going to be disappointed when you change the switch again and you still have the problem
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Old Sep 13, 2018 | 11:35 AM
  #27  
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Originally Posted by 65GGvert
I think you're going to be disappointed when you change the switch again and you still have the problem
I think so too. So I am getting another opinion this Friday. It's hard to describe the symptoms on here. Thanks to everyone that chimed in with advice.

To those that commented and were interested on the VA and its wiring: My Vintage Air is a first Generation and was wired off from the fuse box, not directly off the ignition switch. I never got a chance to get it working as I sold it soon after. I bought the car back last year and one of the previous owners had found the right pulleys for the 400 small block to finish the job.

The only problem is no heat. It only blows cold! I assume the problem to be an actuator door in the heater box. I think it may need a physical adjustment (there are no servos). If anyone has another explanation, I am always open for suggestions.

Can these be upgraded to a GEN IV? system

Thanks again!

Brian
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Old Sep 13, 2018 | 12:16 PM
  #28  
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Originally Posted by Brian
I think so too. So I am getting another opinion this Friday. It's hard to describe the symptoms on here. Thanks to everyone that chimed in with advice.

To those that commented and were interested on the VA and its wiring: My Vintage Air is a first Generation and was wired off from the fuse box, not directly off the ignition switch. I never got a chance to get it working as I sold it soon after. I bought the car back last year and one of the previous owners had found the right pulleys for the 400 small block to finish the job.

The only problem is no heat. It only blows cold! I assume the problem to be an actuator door in the heater box. I think it may need a physical adjustment (there are no servos). If anyone has another explanation, I am always open for suggestions.

Can these be upgraded to a GEN IV? system

Thanks again!

Brian
Sounds to me like the hot water shut off valve is staying closed. It should only be closed with a/c, and open for heat.
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Old Sep 13, 2018 | 12:22 PM
  #29  
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The GEN IV has stepper motors, no cables, etc. I doubt an older system could be upgraded and at a minimum would require an evaporator swap out.
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Old Sep 15, 2018 | 08:59 AM
  #30  
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Originally Posted by Mr D.
You need to isolate what system is being powered on when it shouldn't and troubleshoot each of those independently. My guess is one issue is causing several issues and as pointed out above check for a ground issue as that can cause some crazy things to happen.
I agree with everything said here , especially about grounds . I learned many years ago that a bad ground can cause many weird things to happen , even with things not connected because of back feed .

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Old Oct 31, 2018 | 10:58 AM
  #31  
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My wife Audrey and “Barbara Ann”.
Finally found the culprit to the electrical problem in my car. Turns out the alternator, which once had a generator in place, was the culprit.

Thanks to all who responded with your great ideas as to what the problem could’ve been. Can’t tell you how much I’ve always appreciated the knowledge of Corvetteforum members.

Last edited by Brian; Oct 31, 2018 at 11:27 AM.
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Old Nov 4, 2018 | 08:39 PM
  #32  
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Here is an ignition switch question: While replacing gauge switches it appears they no longer make the 1965 ignition switch.
Is there a Universal Ignition Switch with Key, that will work on the 1965 Dash Gauge Cluster?
Not interested correctness for judging purpose, just something that will work. My only other option would be a push-button start....not too keen about that.



Last edited by CorvetteMikeB; Nov 5, 2018 at 01:55 PM. Reason: new sentence
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Old Nov 7, 2018 | 06:21 PM
  #33  
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Originally Posted by CorvetteMikeB
Here is an ignition switch question: While replacing gauge switches it appears they no longer make the 1965 ignition switch.
Is there a Universal Ignition Switch with Key, that will work on the 1965 Dash Gauge Cluster?
Not interested correctness for judging purpose, just something that will work. My only other option would be a push-button start....not too keen about that.

I don’t believe they make any of the switches anymore. If you can find a new old stock, that would be best. I’ve tried using replacement parts and have found that they do not work well.

I am not sure if the plug-in connector on the 65 ignition is anything like the 64. I do have a 64 new old stock ignition I just removed from the box (pictured above).

Of course this didn’t solve my problem, but it is an authentic new old stock switch. Just not sure if it’ll fit your 65.

As I understand it the 63’s are also very rare

Last edited by Brian; Nov 7, 2018 at 06:25 PM.
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Old Nov 24, 2018 | 08:28 PM
  #34  
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Originally Posted by Brian






I don’t believe they make any of the switches anymore. If you can find a new old stock, that would be best. I’ve tried using replacement parts and have found that they do not work well.

I am not sure if the plug-in connector on the 65 ignition is anything like the 64. I do have a 64 new old stock ignition I just removed from the box (pictured above).

Of course this didn’t solve my problem, but it is an authentic new old stock switch. Just not sure if it’ll fit your 65.

As I understand it the 63’s are also very rare

Corvette Central told me the 1966 Corvette ignition switch and the 1966 Corvette ignition key will work on the 1965 Corvette dash cluster gauge,
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