<VV> Re temp press light

Wed Sep 20 17:24:17 EDT 2023

I  believe that the oil pressure switch is designed to fail in the open position.
Steve Gangi

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Message: 1
Date: Sun, 17 Sep 2023 18:55:50 +0000 (UTC)
From: Greg Shaw <65vair180 at sbcglobal.net>
To: "virtualvairs at corvair.org" <virtualvairs at corvair.org>
Subject: <VV> Press/Temp Light Not On
Message-ID: <1047543980.2338469.1694976950193 at mail.yahoo.com>
Content-Type: text/plain; charset=UTF-8

With the key in the on position my 61 Rampside with manual trans and 95 HP engine has only the Gen/Fan light on. The Press/Temp light is not lit. I have continuity from the Press/Temp bulb socket tan wire to the ignition and from the blue wire back to the sending unit wire in the rear. If I ground the temp and press wire before the split the Press/Temp light will light. Are the oil pressure and cylinder temp senders supposed to be closed initially to complete the circuit? Why is the bulb not lit in the ignition ON position? I don't know if this matters, but I do have the engine/wiring updated with a self regulated alternator. I did not see anything in that conversion mentioning any effects to the dummy lights. Thanks in advance.
Greg ShawPinckney, MI

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Message: 2
Date: Sun, 17 Sep 2023 20:59:49 -0400
From: Frank DuVal <corvairduval at cox.net>
To: virtualvairs at corvair.org
Subject: Re: <VV> Press/Temp Light Not On
Message-ID: <acd90efa-cd15-456d-bcdf-d4c721a0a9ed at cox.net>
Content-Type: text/plain; charset=UTF-8; format=flowed

"If I ground the temp and press wire before the split the Press/Temp 
light will light."

Then the circuit from there to the dashboard light is GOOD.

"Are the oil pressure and cylinder temp senders supposed to be closed 
initially to complete the circuit? "

YES

"Why is the bulb not lit in the ignition ON position?"

Because either the switch is bad or the short length of wire between the 
switch and the split is bad, 99% of the time it is the switch. Simple 
test, ground the terminal of the switch.

Frank DuVal

On 9/17/2023 2:55 PM, Greg Shaw via VirtualVairs wrote:
> With the key in the on position my 61 Rampside with manual trans and 95 HP engine has only the Gen/Fan light on. The Press/Temp light is not lit. I have continuity from the Press/Temp bulb socket tan wire to the ignition and from the blue wire back to the sending unit wire in the rear. If I ground the temp and press wire before the split the Press/Temp light will light. Are the oil pressure and cylinder temp senders supposed to be closed initially to complete the circuit? Why is the bulb not lit in the ignition ON position? I don't know if this matters, but I do have the engine/wiring updated with a self regulated alternator. I did not see anything in that conversion mentioning any effects to the dummy lights. Thanks in advance.
> Greg ShawPinckney, MI

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Message: 3
Date: Mon, 18 Sep 2023 06:04:31 -0400
From: William Hubbell <whubbell at umich.edu>
To: Frank DuVal <corvairduval at cox.net>
Cc: virtualvairs at corvair.org
Subject: Re: <VV> Press/Temp Light Not On
Message-ID: <E2FDE861-FCA3-4DFF-A9EC-4B316674EB32 at gmail.com>
Content-Type: text/plain; charset=utf-8

One correction: only the Oil pressure switch is closed initially (because there is no oil pressure with the engine not running!); the temp switch is OPEN!  But because the two switches are wired in series, the idiot light goes on with ignition on before you start the engine. 

Bill

On Sep 17, 2023, at 8:59 PM, Frank DuVal via VirtualVairs <virtualvairs at corvair.org> wrote:

?"If I ground the temp and press wire before the split the Press/Temp light will light."

Then the circuit from there to the dashboard light is GOOD.

"Are the oil pressure and cylinder temp senders supposed to be closed initially to complete the circuit? "

YES

"Why is the bulb not lit in the ignition ON position?"

Because either the switch is bad or the short length of wire between the switch and the split is bad, 99% of the time it is the switch. Simple test, ground the terminal of the switch.

Frank DuVal

On 9/17/2023 2:55 PM, Greg Shaw via VirtualVairs wrote:
> With the key in the on position my 61 Rampside with manual trans and 95 HP engine has only the Gen/Fan light on. The Press/Temp light is not lit. I have continuity from the Press/Temp bulb socket tan wire to the ignition and from the blue wire back to the sending unit wire in the rear. If I ground the temp and press wire before the split the Press/Temp light will light. Are the oil pressure and cylinder temp senders supposed to be closed initially to complete the circuit? Why is the bulb not lit in the ignition ON position? I don't know if this matters, but I do have the engine/wiring updated with a self regulated alternator. I did not see anything in that conversion mentioning any effects to the dummy lights. Thanks in advance.
> Greg ShawPinckney, MI
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Message: 4
Date: Mon, 18 Sep 2023 09:06:11 -0500
From: Jim Becker <mr.jebecker at gmail.com>
To: William Hubbell <whubbell at umich.edu>, Frank DuVal
    <corvairduval at cox.net>
Cc: "virtualvairs at corvair.org" <virtualvairs at corvair.org>
Subject: Re: <VV> Press/Temp Light Not On
Message-ID: <23C61CF2-DE9A-49F8-93D4-CD6034058B8C at hxcore.ol>
Content-Type: text/plain; charset="utf-8"

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