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Joined: Jun 2015
Posts: 78
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2015
Posts: 78 |
I'm upgrading the 6 volt generator system on my 1946 half ton pick up to a 12 volt system using a 10si one wire alternator. I've already changed out all the light bulbs and ran resistors in line to the points and the heater. My question is do I need to run a resistor in line to my fuel gauge? (The sending unit is for 6 or 12 volts.)
Thanks for you help in this matter.
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Joined: Jun 2015
Posts: 78
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2015
Posts: 78 |
For what its worth, I just read a number of responses after searching this issue in past posts. I'm still confused. Responses are all over the place. Some say yes, some say no!
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Joined: Dec 2016
Posts: 656 Likes: 3
Oil Can Mechanic
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Oil Can Mechanic
Joined: Dec 2016
Posts: 656 Likes: 3 |
The sending unit is 0-30 ohms and does not care.
The gauge itself is designed for 6 volts and will have to dissipate more heat if you run it on 12 volts.
I would expect it to become damaged or burn out entirely, though some people seem to be getting away with it.
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Joined: Jun 2015
Posts: 78
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2015
Posts: 78 |
I just ordered a Runtz voltage reducer to be on the safe side.
bloo, thanks for your response.
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Joined: Jun 2015
Posts: 78
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2015
Posts: 78 |
I got the Runtz wired in today. Installation per the directions was straight forward. I did put a couple extra washers on the feed terminal of the gauge to get a little more distance between the resistor and the back of the gauge.
The worst part of the whole process was accessing the back of the gauge (I'm not young and flexible anymore).
I put five gallons of gas in the new (empty) tank and the gauge responded accordingly.
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