voltmeter readings


Information and questions on GL1200 Goldwings (1984-1987)
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bllazerhoper
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voltmeter readings

Postby bllazerhoper » Thu May 01, 2014 10:33 am



Ok I put a new battery on fully charged I turned key on and the volts read 10.7 I started bike it then it shows 13.2 rev engine to 3000 rpms and still 13.2 turn off bike it shows10.7 I think my volt meter is bad



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WingAdmin
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Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: voltmeter readings

Postby WingAdmin » Thu May 01, 2014 11:01 am

Keep in mind, when you switch the key on, your headlight comes on and that draws a fair bit of power. 10.7 is a bit low, and 13.2 is a bit low as well, it should be closer to 14. If you put a digital multimeter on the same connection as you used for your voltmeter, does it show the same reading? How about if you put it directly on the battery terminals?

seagullplayer
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Location: Marengo, Indiana
Motorcycle: 1884 GL1200 Interstate
1995 HD 883

Re: voltmeter readings

Postby seagullplayer » Thu May 01, 2014 11:17 am

First thing I would do is remove the neg battery lead and take a reading, should be 12+.

10.7 sounds like a either something is pulling it down or bad cell.

To check your meter go read the battery in your car.

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virgilmobile
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Re: voltmeter readings

Postby virgilmobile » Thu May 01, 2014 12:06 pm

As the Admin mentioned,where you take a reading is important,right along with the accuracy of the meter.
I first verified my meter by comparing the reading with a second meter.
It is also common to have a voltage drop in the wiring,switches,fuseholders,lights,etc between the battery and where you actually hook up the meter with the key on.
I've seen as much as a volt and a half drop in the switched accessory line on a 80 gl1100.
My personal favorite solution is a fused wire from the battery lug connected to a relay then it supplies my accessories.I let the bikes acc.just operate the relay.

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bllazerhoper
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Location: Hobbs,Nm
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Re: voltmeter readings

Postby bllazerhoper » Thu May 01, 2014 1:32 pm

I need to go by me a multi meter but I think the volt meter I installed on bike is correct I think my stator is going out. That's not good I don't have a shop to pull engine out to put on a poor boy kit I guess no more long rides.for right now at least it charges enough too ride around town

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virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: voltmeter readings

Postby virgilmobile » Thu May 01, 2014 1:42 pm

After you get your DVM,let us know.There are specific ways to test the charging system to determine exactly what's wrong and the most economical way to get it fixed.
Couple of questions first.
Have you inspected the 3 yellow wires to the left of the battery and does your bike have ANY add on equipment like driving lights.?

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bllazerhoper
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Location: Hobbs,Nm
Motorcycle: 1984 Honda Aspencade

Re: voltmeter readings

Postby bllazerhoper » Thu May 01, 2014 2:56 pm

I checked yellow wires awhile back and cut the plug of and spliced them together the plug was burnt

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bllazerhoper
Posts: 12
Joined: Fri Apr 25, 2014 8:52 pm
Location: Hobbs,Nm
Motorcycle: 1984 Honda Aspencade

Re: voltmeter readings

Postby bllazerhoper » Thu May 01, 2014 2:58 pm

I don't have any extra lighting it is all stock

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virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: voltmeter readings

Postby virgilmobile » Thu May 01, 2014 4:41 pm

Great,keep us posted.




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