120 Lehman volt gauge

geoleo · Dec 11, 2018

Just discovered that the 2 volt gauges on the Lehman 120 installed on my 1982 Marine Trader 34 DC are wired 'hot"! They are "on" all the time-not just when the key is turned on. Is this bad? Doesn't seem right to me--- should I rewire it to make it live when key is turned on?? Thanks. :banghead:

alfamike · Dec 11, 2018

Electrical

I don't know of any 2-volt items on my old Lehman 120.

So, presuming a typo ? -- must mean 12-Volt.

But the 12 - volt stuff should all be off when the engine is turned off.

Even your volt meters.

So re-wire is in the card my friend. :dance:

Good luck.

Alfa Mike

Xsbank · Dec 11, 2018

I entirely disagree, my system voltage is always displayed no matter what the "ignition" switch is doing. Do you have 2 start batteries, one for each engine? Do you have a battery charger for them? I always want to know how my batteries are doing whether I'm visiting, staying or under way.

geoleo · Dec 11, 2018

alfamike said:
I don't know of any 2-volt items on my old Lehman 120.

So, presuming a typo ? -- must mean 12-Volt.

But the 12 - volt stuff should all be off when the engine is turned off.
Even your volt meters.

So re-wire is in the card my friend.

Good luck.

Alfa Mike

Thanks Mike- yes typo yes rewire

geoleo · Dec 11, 2018

Xsbank said:
I entirely disagree, my system voltage is always displayed no matter what the "ignition" switch is doing. Do you have 2 start batteries, one for each engine? Do you have a battery charger for them? I always want to know how my batteries are doing whether I'm visiting, staying or under way.

Have other voltage displays -thanks

FF · Dec 12, 2018

Tiny, tiny ,tiny , but volt meters use electric when reading.

No biggy for the dock queens , but everything adds up if the boat is left on a mooring.

DavidM · Dec 12, 2018

That voltmeter will use so little current if it is left on all of the time as to be meaningless. If left on a mooring, the batteries will self discharge at tens of thousands of times more than what that voltmeter uses.

David

AusCan · Dec 12, 2018

I agree. The power used is practically nothing.
My LED voltmeters are powered via a switch but it is always left on, even when the main charger is not on (which is most of the time). Having the voltage info there every time you walk past makes you very familiar with your state of charge.

120 Lehman volt gauge

geoleo

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alfamike

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Xsbank

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geoleo

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geoleo

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FF

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DavidM

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AusCan

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