Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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Joined: Feb 2010
Posts: 323
Backyard Mechanic
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Backyard Mechanic
Joined: Feb 2010
Posts: 323
I try to keep my 48 Fleetmaster as stock as possible but sometimes I can't do otherwise as making minor modifications.
Does anyone know the value in Oms of the resistor needed for the fuel gage when converting electrics from 6 to 12 volts?
I should normally order a set of resistors from one of the known USA-based vendors but I only need the one for the fuel gauge and shipping takes a long time to come and at a considerable cost.
I really appreciate any help you can provide.
driving driving driving

Joined: May 2002
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Likes: 41
ChatMaster - 6,000
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ChatMaster - 6,000
Joined: May 2002
Posts: 6,149
Likes: 41
I dont think you need a resistor for the fuel guage as they are not voltage controlled but resistance controlled, adding resistance prior to the guage on the dash wont make any difference to operation.
Tony


1938 1/2 ton Hope to drive it before I retire
Joined: Feb 2010
Posts: 323
Backyard Mechanic
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Backyard Mechanic
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Posts: 323
Thank you Tony driving

Joined: Sep 2002
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ChatMaster - 2,000
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ChatMaster - 2,000
Joined: Sep 2002
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Likes: 6
I used a 30 ohm 2 watt resistor. Some folks have good luck with using no resistor and some end up with a burned out gauge.


My 1951 1 Ton is now on the road! My 38 Master 4 Door is also now on the road .
Joined: Feb 2010
Posts: 323
Backyard Mechanic
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Backyard Mechanic
Joined: Feb 2010
Posts: 323
Thank you.
After a search, I found out that Rusty 37 master also mentioned it.
For now, I will use a switch in the gage wiring so I will be turning it momentarily on when I need to know the fuel level.
Jianis driving


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