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Please help me identify the Hot and Ground wire.

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Please help me identify the Hot and Ground wire.

Old 07-06-2014, 01:39 PM
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Default Please help me identify the Hot and Ground wire.

First thanks for reading my post. Im not an electrician and I need to install this new Twin Site Guage to the fuel sending unit. if you look close at the picture you can see that both wires are solid black. But the wire to the left has small white dots all the way down the wire. Would that mean that the wire with the white dots should be connected to the red hot going to the instrument panel. Or is it the ground. I wouod hate to connect it wrong. Thanks for your help.
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Old 07-06-2014, 02:14 PM
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I don't think you have a hot and ground. I think it is a loop for another gauge to read from, and provides resistance.
Bet it works either way.
Old 07-06-2014, 02:54 PM
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No instructions? If It matters and it should!!! the white dots would be a marking for + /- if I were to guess. I could still be wrong. So get the support for the install from the product manufacture
Old 07-06-2014, 04:01 PM
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The sender is a variable resister, It doesn't matter wich wire gets hooked to ground and wich gets hooked to sender terminal of gage, it will work either way.
Old 07-07-2014, 07:37 AM
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Resistors do not have a polarity.
Old 07-07-2014, 01:42 PM
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Both are uncovered/unguarded terminal ends, so i'm guessing they're not polarity-sensitive. But it looks weird in any case, seems like one (or both) would have the plastic cover on it to prevent a potential grounding/short if it comes in contact with a real ground.

I realize that isn't much help, sorry.
Old 07-07-2014, 03:47 PM
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Originally Posted by dogdad1 View Post
Both are uncovered/unguarded terminal ends, so i'm guessing they're not polarity-sensitive. But it looks weird in any case, seems like one (or both) would have the plastic cover on it to prevent a potential grounding/short if it comes in contact with a real ground.

I realize that isn't much help, sorry.
both would be connected to female spade terminals with an outer casing or the connection would be shrink wrapped as it is most likely in a bilge area...

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