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Old 03-02-2013, 10:15 PM
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incomming power for a fuel gauge.

hello gearheads!
im working on a 62 falcon ranchero
170 I-6
i am in the process of finding a draw in the electrical system.
ive been through most of the fried wires that the previous owner decided to BBQ (personally i woulda cue'd up some steaks).
in the stock electrical diagram, the incomming power for the fuel gauge is tapped into the voltage regulator.
well, this thing has a GM 1 wire alternator and no voltage regulator.

my question is this.

do i wire the incomming power from the fuel gauge to switched 12V+?

than you for your help!

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Old 03-03-2013, 06:21 AM
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Power to the gauges on a STOCK Falcon cluster, goes to a smaller
constant voltage regulator on the back of the instrument cluster.

None of the factory gauges (Fuel-Temp in my 65) will work very long
with 12 volts applied. I am not sure, but I think that "Constant Voltage Unit"
brings the voltage down to about 5 volts.
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Old 03-03-2013, 06:40 PM
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When Ford switched to 12v they left the gauges 6v or less. so unless you changed gauges you will fry it. By the way they did not change to 12v untill the 90's.

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