Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-11-2018, 05:52 PM   #1
Scraping Paint
 
City: Lutz
Country: USA
Join Date: Jan 2016
Posts: 408
120 Lehman volt gauge

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.
__________________
Advertisement

geoleo is offline   Reply With Quote
Old 12-11-2018, 06:20 PM   #2
Senior Member
 
alfamike's Avatar
 
City: Camarillo
Country: USA
Join Date: May 2015
Posts: 310
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.

Good luck.

Alfa Mike
__________________

alfamike is offline   Reply With Quote
Old 12-11-2018, 07:24 PM   #3
Guru
 
Xsbank's Avatar
 
City: Pender Harbour, BC
Country: Canada
Vessel Name: Gwaii Haanas
Vessel Model: Vancouver Shipyards Custom Aluminum 52
Join Date: Sep 2013
Posts: 3,114
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.
__________________
Don't believe everything that you think.
What are we offended about today?
Xsbank is offline   Reply With Quote
Old 12-11-2018, 07:33 PM   #4
Scraping Paint
 
City: Lutz
Country: USA
Join Date: Jan 2016
Posts: 408
Quote:
Originally Posted by alfamike View Post
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 is offline   Reply With Quote
Old 12-11-2018, 07:35 PM   #5
Scraping Paint
 
City: Lutz
Country: USA
Join Date: Jan 2016
Posts: 408
Quote:
Originally Posted by Xsbank View Post
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
geoleo is offline   Reply With Quote
Old 12-12-2018, 07:10 AM   #6
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 18,928
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.
FF is offline   Reply With Quote
Old 12-12-2018, 07:43 AM   #7
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23- outboard
Join Date: Aug 2012
Posts: 4,410
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
djmarchand is offline   Reply With Quote
Old 12-12-2018, 05:23 PM   #8
Guru
 
AusCan's Avatar
 
City: Adelaide
Country: Australia
Vessel Name: Kokanee
Vessel Model: Cuddles 30 Pilot House Motor Sailer
Join Date: Jul 2012
Posts: 2,746
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.
__________________

AusCan is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 08:19 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012