gauge testing

[jazak5]

have some rally gauges I would like to test before I offer them for sale>>>>
how much voltage do they require so I don't fry them(I know at least under 12v dc)

 

[ringo440]

have some rally gauges I would like to test before I offer them for sale>>>>
how much voltage do they require so I don't fry them(I know at least under 12v dc)

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Tape 2 d cell batteries together and attach wire to each end and that will your test voltage 3 volts ,gauges will read about half.

 

[rays266]

The terminals on the back of the gas gauge are marked “A,” “S,” and “I.” Test it with the “I” and “S” terminals.
2 D cell batteries should show 1/2 of full reading, 3 D cells near 100%

 

[Bunker45]

Good info. Was wondering the same thing.

 

[RedFish]

The terminals on the back of the gas gauge are marked “A,” “S,” and “I.” Test it with the “I” and “S” terminals.
2 D cell batteries should show 1/2 of full reading, 3 D cells near 100%

That doesn't apply to the 3 post gauges. "I" is input for all. "S" is sender for all.
"I" / Input for this 3 post fuel gauge is 12 volts. "A" is altered/adjusted so "A" and "I" are the gauge posts.