82 Center Gauge Console

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Nov 29, 2025 | 05:48 PM

jthornton

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Melting Slicks

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From: Poplar Bluff MO

82 Center Gauge Console

Rebuilding the center gauge console and one of the warning lights has 3 contact points. The upper left one, but none of the bulb holders I have have 3 contacts.

I can see on the original that there was three contacts...

Anyone know where to get that bulb holder none of mine have three contacts?

JT

Nov 29, 2025 | 05:54 PM

jthornton

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From: Poplar Bluff MO

Looks like it might be a low fuel light...

JT

Nov 29, 2025 | 06:06 PM

4-vettes

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No such thing as a incandescent bulb with 3 contacts.

Nov 29, 2025 | 06:09 PM

jthornton

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Melting Slicks

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From: Poplar Bluff MO

I don't think the bulb has three contacts just the connector so maybe the low fuel is part of something in the bulb holder. For sure there are three contacts on that part of the circuit.

JT

Nov 29, 2025 | 06:16 PM

4-vettes

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factory schematic shows an unused ground.

Nov 29, 2025 | 08:48 PM

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Melting Slicks

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Quote:

Originally Posted by 4-vettes

No such thing as a incandescent bulb with 3 contacts.

Want to bet? Home Depot used to sell them in the 50-100-150 watt variety before everything went LED. I just couldn't resist

Nov 30, 2025 | 06:27 AM

jthornton

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Melting Slicks

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From: Poplar Bluff MO

Quote:

Originally Posted by 4-vettes

factory schematic shows an unused ground.

Doesn't look unused to me it's connected to the resistor on the fuel gauge. Can you upload that whole page?

JT

Nov 30, 2025 | 06:29 AM

jthornton

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Melting Slicks

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From: Poplar Bluff MO

Found it and it's a low fuel bulb holder with some stuff on it.
https://www.volvette.com/EL78G.html

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Nov 30, 2025 | 07:11 AM

bmotojoe

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Quote:

Originally Posted by jthornton

Found it and it's a low fuel bulb holder with some stuff on it.
https://www.volvette.com/EL78G.html

Yes, thats the module...
Your wire colors may be different but the circuit is the same...
Switched Power
Signal from sender
& a ground...

Nov 30, 2025 | 07:49 AM

#10

bmotojoe

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Your 82 I believe utilizes 1 more socket not used on a 77...
PCB with 77 circuits & wire colors...

Nov 30, 2025 | 04:41 PM

#11

jthornton

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Melting Slicks

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From: Poplar Bluff MO

Quote:

Originally Posted by bmotojoe

Your 82 I believe utilizes 1 more socket not used on a 77...
PCB with 77 circuits & wire colors...

This is a huge help because I'm putting in LED's that have a + and - side so I need to know which ones are negative so I can test the LED orientation out. I'm wondering if when you turn the ignition on does the fuel low come on until it's running? I bet 11 and 9 won't turn on the fuel low light without 10 being some voltage.

JT

Nov 30, 2025 | 05:56 PM

#12

bmotojoe

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Quote:

Originally Posted by jthornton

My experience, the low fuel light only comes on if no signal from sender or at about 3 gallons of fuel remaining, but my 77 has a smaller fuel tank...

Dec 1, 2025 | 06:56 AM

#13

jthornton

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From: Poplar Bluff MO

Quote:

Originally Posted by bmotojoe

My experience, the low fuel light only comes on if no signal from sender or at about 3 gallons of fuel remaining, but my 77 has a smaller fuel tank...

That might make it easy to test the polarity of the LED on the bench.

JT

Dec 1, 2025 | 07:08 AM

#14

bmotojoe

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Quote:

Originally Posted by jthornton

That might make it easy to test the polarity of the LED on the bench.

JT

Do you have a working module?

Dec 1, 2025 | 08:38 AM

#15

bmotojoe

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FYI...
If you're module is missing and you install a bulb & socket into the low fuel hole the bulb will be on anytime the ignition switch is on...

Dec 1, 2025 | 12:11 PM

#16

jthornton

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From: Poplar Bluff MO

Quote:

Originally Posted by bmotojoe

Do you have a working module?

The module is on order from Volunteer Vettes.

JT

Dec 3, 2025 | 04:07 PM

#17

jthornton

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From: Poplar Bluff MO

The extra light is a check engine light which will never work... interesting that in 77 they were already planning for the check engine light.

JT

Dec 3, 2025 | 04:49 PM

#18

4-vettes

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The extra light in a 77 was where the door ajar light was in earlier cars. Not a check engine light.

Dec 6, 2025 | 07:01 AM

#19

jthornton

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Melting Slicks

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From: Poplar Bluff MO

Quote:

Originally Posted by 4-vettes

The extra light in a 77 was where the door ajar light was in earlier cars. Not a check engine light.

I should have been more clear the extra light in my 82 is a check engine light.

JT

Dec 6, 2025 | 07:07 AM

#20

jthornton

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Melting Slicks

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From: Poplar Bluff MO

Does anyone have an idea how to test the low fuel module out of the car? I have LED lights that I must verify the polarity. I tried putting 12v on pins 9 and 11 but I'm guessing the low fuel module needs something on all three pins to light up. I might just stick an incandescent light in that one for now. I just need to get on with putting the car back together.

JT

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