gauge light q's - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jrtodd46 · 02-17-2011, 03:34 PM

I've ran into a problem that has my brain racked. My oil press guage light bulb blew, but all the other guages still lit up. We pulled the bulb to check the number and ever since then none of the gauge lights work.

The oil and trans temp guages are aftermarket and wired in,fuses and every bulb other than the oil gauge is good. How are the guages not working now, but worked before? The generator and blinkers light up, just not the gauges.

Could the headlight switch be bad? It still turns on my headlights
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**VetteVet** · 02-17-2011, 04:09 PM

I believe that the lights are wired in parallel so if one bulb blows the rest will work. The bulb socket completes the + and - sides of the circuit even though the bulb itself is blown so if you remove the socket you break the circuits and none of the bulbs will work. Get a new bulb and replace the socket and all should be well.

jrtodd46 · 02-17-2011, 04:13 PM

Well what would be the next step if the new bulb doesn't fix the issue, just incase.
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eagleuh1 · 02-17-2011, 08:57 PM

my sockets needed cleaning with a scrub pad on a couple lights. The bulbs were good, but the sockets had a little corrosion/buildup on them. and the lights wouldn't come on.

jrtodd46 · 02-19-2011, 08:48 PM

Ok here's an update......

New headlight switch
New bulbs
Even put in an extra board I had

No guage lights

Now while checking fuses we found that the pnl connector had no power when keyed on. We checked the fuse box and no breaks in the wiring. Maybe someone has faced this before?
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02-17-2011, 03:34 PM	#1
jrtodd46 Registered User Join Date: Aug 2010 Location: Beech Island, SC Posts: 16	gauge light q's I've ran into a problem that has my brain racked. My oil press guage light bulb blew, but all the other guages still lit up. We pulled the bulb to check the number and ever since then none of the gauge lights work. The oil and trans temp guages are aftermarket and wired in,fuses and every bulb other than the oil gauge is good. How are the guages not working now, but worked before? The generator and blinkers light up, just not the gauges. Could the headlight switch be bad? It still turns on my headlights Posted via Mobile Device

02-17-2011, 04:09 PM	#2
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,718	Re: gauge light q's I believe that the lights are wired in parallel so if one bulb blows the rest will work. The bulb socket completes the + and - sides of the circuit even though the bulb itself is blown so if you remove the socket you break the circuits and none of the bulbs will work. Get a new bulb and replace the socket and all should be well. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

02-17-2011, 04:13 PM	#3
jrtodd46 Registered User Join Date: Aug 2010 Location: Beech Island, SC Posts: 16	Re: gauge light q's Well what would be the next step if the new bulb doesn't fix the issue, just incase. Posted via Mobile Device

02-17-2011, 08:57 PM	#4
eagleuh1 Registered User Join Date: Jul 2009 Location: Russellville, Arkansas Posts: 1,699	Re: gauge light q's my sockets needed cleaning with a scrub pad on a couple lights. The bulbs were good, but the sockets had a little corrosion/buildup on them. and the lights wouldn't come on.

02-19-2011, 08:48 PM	#5
jrtodd46 Registered User Join Date: Aug 2010 Location: Beech Island, SC Posts: 16	Re: gauge light q's Ok here's an update...... New headlight switch New bulbs Even put in an extra board I had No guage lights Now while checking fuses we found that the pnl connector had no power when keyed on. We checked the fuse box and no breaks in the wiring. Maybe someone has faced this before? Posted via Mobile Device



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