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#1 |
Senior Member
Join Date: Aug 2020
Posts: 235
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The only wireing is the ignition . My question is ....can an ignition switch that is left on kill battery
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#2 |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,831
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Yes if the points are closed.
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#3 |
Senior Member
Join Date: Mar 2020
Posts: 150
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Sure, the points being closed will short the battery to ground and kill it.
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#4 | |
Senior Member
Join Date: Jun 2020
Location: Hartford area, CT
Posts: 374
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In any event, if you have a mystery battery drain like that and it isn't obvious, I'd recommend taking off the negative battery cable and put an ohmmeter between the disconnected negative cable and ground. It should read infinity, or very high, or open. If you get something less than 1,000 ohms, start looking for frayed wires, accessories left on, something. (That's for a positive ground system which is original) If the battery fails and you have over 1,000 ohms, you have a bad battery. Last edited by Mister Moose; 11-18-2020 at 03:06 PM. Reason: Fix error |
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#5 | |
Senior Member
Join Date: Sep 2019
Location: Fort Gratiot, Michigan
Posts: 2,296
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Last edited by McMimmcs; 11-18-2020 at 06:50 PM. |
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#6 |
Senior Member
Join Date: Jun 2020
Location: Hartford area, CT
Posts: 374
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#7 | ||
Senior Member
Join Date: Aug 2012
Posts: 895
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The Master Cylinder Enjoying life at the beach in SoCal... Last edited by The Master Cylinder; 11-18-2020 at 03:46 PM. |
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#8 |
Senior Member
Join Date: Jan 2015
Location: San Jose California
Posts: 150
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Mine had a low current draw, a cutoff switch solved the problem.
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#9 |
Senior Member
Join Date: May 2010
Location: Oregon
Posts: 6,022
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Charge the battery and disconnect it then see if it discharges. It might not be the fault of the A
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#10 | |
Senior Member
Join Date: Aug 2011
Location: Eagle Bend, MN
Posts: 2,030
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On another note, draining a battery repeatedly will destroy it. Until the issue is figured out you should remove a battery cable when you park. Also put a trickle charger on the battery for at least a day or two after draining it.
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#11 | |
Senior Member
Join Date: Jun 2020
Location: Hartford area, CT
Posts: 374
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#12 | ||
Senior Member
Join Date: Aug 2012
Posts: 895
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Regardless I believe he has his answer, leaving the key on will drain the battery. As he said in the first post
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The Master Cylinder Enjoying life at the beach in SoCal... Last edited by The Master Cylinder; 11-18-2020 at 04:52 PM. |
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#13 |
Senior Member
Join Date: Jun 2020
Location: Hartford area, CT
Posts: 374
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#14 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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To check for the battery draw, it really makes no difference whether the test light is connected between the positive or negative leads. It'll still light the light if the draw is there.
And if the points are closed there will be a draw and the coil will get hot. |
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#15 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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#16 |
Senior Member
Join Date: Aug 2020
Posts: 235
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I only have ignition wired for now . Meter shows it charging when it runs
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#17 |
Senior Member
Join Date: May 2010
Posts: 2,801
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As a matter of safety I always just pulled the NEG cable off after I shut the Model A down after a drive. And if I was going to let it sit more than a month or so I'd hook up a trickle charger until it was charged and then unhook that.
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#18 |
Senior Member
Join Date: Jan 2018
Location: Tocumwal, NSW, Australia
Posts: 1,756
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I have found 6V batteries have a shorter life compared with 12V.
Now my 6V has died I have made the decision to convert. I believe it is important to change the starter at the same time otherwise the impact on engagement is far too severe and sooner or later something has to fail.
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#19 |
Senior Member
Join Date: Aug 2020
Posts: 235
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this is a build in progress . the only wires are what is needed to run engine and charge battery. the ampmeter shows a 10amp charge when it runs . battery voltage read 2.75 volts this morning and it has been on a charger since that reading was taken.
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#20 |
Junior Member
Join Date: Oct 2020
Posts: 4
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maybe if he had the mete in a current reading mode?
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