47-55.1 1947 Guages - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dachshund · 02-15-2019, 06:18 PM

I am switching over to 12v and, of course, the gauges are still 6v units. What is better/cheaper - replace the whole cluster, or get individual gauges? The chrome on mine is pitted, but I was planning on painting them anyway, so it's not a big deal. All I need are the Amp and the fuel guage, correct?

*Jesse Z* · 02-15-2019, 11:14 PM

Amp guage doesnt need to be changed, does it?, oil pressure and temp are mechanical,. So I think your looking at fuel gauge only. 12v replacement fuel gauges are chaep

Dont foreget to change light bulbs.

e015475 · 02-16-2019, 11:23 AM

The bezel and glass are easy to replace too. Parts are available from the usual suppliers.

MARTINSR · 02-16-2019, 11:58 AM

Quote:

Originally Posted by Jesse Z

Amp guage doesnt need to be changed, does it?, oil pressure and temp are mechanical,. So I think your looking at fuel gauge only. 12v replacement fuel gauges are chaep

Dont foreget to change light bulbs.

As I remember I didn't even change the fuel gauge. I don't think it works on "volts" so it doesn't matter.

Brian

Dachshund · 02-16-2019, 01:21 PM

Ok, thanks! Another Question -
What is the black sealant stuff used under the glass? It (WAS) it a gasket, or some sort of caulk?

**mr48chev** · 02-16-2019, 05:04 PM

I think that most of the truck trinket vendors have guage parts availble but this was easy for me to bring up.
https://www.classicparts.com/Gauge-Parts/products/851/

I'm thinking that "sealer" may originally have been the Bezel gasket.

Dachshund · 02-16-2019, 09:55 PM

Quote:

Originally Posted by mr48chev

I think that most of the truck trinket vendors have guage parts availble but this was easy for me to bring up.
https://www.classicparts.com/Gauge-Parts/products/851/

I'm thinking that "sealer" may originally have been the Bezel gasket.

Ok - Thanks! Now - are there TWO in each cluster (one on each side of the glass)?

MiraclePieCo · 02-17-2019, 04:14 AM

Quote:

Originally Posted by MARTINSR

As I remember I didn't even change the fuel gauge. I don't think it works on "volts" so it doesn't matter.

Brian

Classic Parts sells 6 and 12 volt gas gauges, so maybe there's a difference?

Yikes, they are NOT cheap:

https://www.classicparts.com/searchprods.asp

weim55 · 02-17-2019, 03:03 PM

If you are converting to 12 V on an otherwise stock truck you should be OK through the factory Ammeter. But if you have added a significant amount of electrical Accessories ( Electric fans, air conditioning, high-end stereo, etc) as well as a high output alternator the original wiring will not handle the The high amperage running through it.

Steve weim55 Colorado

Dachshund · 02-17-2019, 04:22 PM

Quote:

Originally Posted by weim55

If you are converting to 12 V on an otherwise stock truck you should be OK through the factory Ammeter. But if you have added a significant amount of electrical Accessories ( Electric fans, air conditioning, high-end stereo, etc) as well as a high output alternator the original wiring will not handle the The high amperage running through it.

Steve weim55 Colorado

Yeah, the wiring was the main reason the truck was parked - it was BAD 20 years ago. I plan on installing all new. Not very much in the way of "accessories", just radio, and MAYBE a fan - otherwise pretty simple.

02-15-2019, 06:18 PM	#1
Dachshund Registered User Join Date: Oct 2018 Location: Trenton MO Posts: 201	1947 Guages I am switching over to 12v and, of course, the gauges are still 6v units. What is better/cheaper - replace the whole cluster, or get individual gauges? The chrome on mine is pitted, but I was planning on painting them anyway, so it's not a big deal. All I need are the Amp and the fuel guage, correct? Last edited by Dachshund; 02-15-2019 at 06:27 PM.

02-15-2019, 11:14 PM	#2
Jesse Z Account Suspended Join Date: Aug 2016 Location: Florida, USA Posts: 290	Re: 1947 Guages Amp guage doesnt need to be changed, does it?, oil pressure and temp are mechanical,. So I think your looking at fuel gauge only. 12v replacement fuel gauges are chaep Dont foreget to change light bulbs.

02-16-2019, 11:23 AM	#3
e015475 Registered User Join Date: Nov 2013 Location: Show Low, Arizona Posts: 778	Re: 1947 Guages The bezel and glass are easy to replace too. Parts are available from the usual suppliers.

02-16-2019, 01:21 PM	#5
Dachshund Registered User Join Date: Oct 2018 Location: Trenton MO Posts: 201	Re: 1947 Guages Ok, thanks! Another Question - What is the black sealant stuff used under the glass? It (WAS) it a gasket, or some sort of caulk?

02-16-2019, 05:04 PM	#6
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: 1947 Guages I think that most of the truck trinket vendors have guage parts availble but this was easy for me to bring up. https://www.classicparts.com/Gauge-Parts/products/851/ I'm thinking that "sealer" may originally have been the Bezel gasket. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

02-17-2019, 03:03 PM	#9
weim55 Registered User Join Date: Jan 2017 Location: Larkspur, Colorado Posts: 916	Re: 1947 Guages If you are converting to 12 V on an otherwise stock truck you should be OK through the factory Ammeter. But if you have added a significant amount of electrical Accessories ( Electric fans, air conditioning, high-end stereo, etc) as well as a high output alternator the original wiring will not handle the The high amperage running through it. Steve weim55 Colorado



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