problems with digital multimeter - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 12 (permalink) Old 05-10-2005, 01:16 AM Thread Starter
 
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problems with digital multimeter

I just purchased a new digital multimeter and am having problems testing the bike's charging system. Everything works fine when the bike is not running however, after it is started the multimeter display goes haywire. Numbers randomly cycle on the display regardless of the setting. It also works fine when i use it test my car's charging system. Any ideas why this is happening?
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post #2 of 12 (permalink) Old 05-11-2005, 10:50 AM
 
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Re: problems with digital multimeter

What type of mulimeter do you own? Explain what you are checking on your bike, and where you are placing the probes.


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post #3 of 12 (permalink) Old 05-12-2005, 02:51 AM Thread Starter
 
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Re: problems with digital multimeter

It is an Actron multimeter. The probes are only near the bike, not even touching it when it acts up. I have tried clearing them by touching the probe tips together, but that doesnt make a difference.
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post #4 of 12 (permalink) Old 05-12-2005, 06:22 AM
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Re: problems with digital multimeter

Check out http://home1.gte.net/res0ak9f/bike2.htm and the Kuryakyn 4219/4218 "Battery Gauge" VOM Installation.
He used a relay and resistor for his.

Dianna
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2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
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post #5 of 12 (permalink) Old 05-12-2005, 08:05 AM
 
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Re: problems with digital multimeter

ok. so with the multimeter set to the dc scale, you start the bike, and the scale starts going crazy. So what is the intrinsic difference between running and not running? The answer is alternating current, which is what the stator produces. AC can be induced into the leads of your meter causing erroneous readings. Try switching to the ac scale and observe the scale. What exactly are you trying to measure,and where on the bike are you trying to measure it?
Dianna read his post again. He is not installing a volt meter, hes using a multimeter to check his charging system. Starman's procedure does not apply here

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post #6 of 12 (permalink) Old 05-12-2005, 08:50 AM
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Re: problems with digital multimeter

Ack.. ok.. nevermind then! :roll:

Dianna
Conway, AR
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)
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post #7 of 12 (permalink) Old 05-12-2005, 12:12 PM Thread Starter
 
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Re: problems with digital multimeter

I am attempting to measure the amount of current being supplied to the battery. What I would like to do is place the postive probe on the positive battery terminal and the negative on the negative terminal. This should be done with the multimeter set to DC anyway. Though as I even approach the started bike, the meter garbles-probes touching nothing. Using the meter in the same fashion with my car which is running, I have no problems. I have tried grinding my fillings together when i ride to see if I can pick up any radio stations, but so far nothing
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post #8 of 12 (permalink) Old 05-12-2005, 12:15 PM Thread Starter
 
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Re: problems with digital multimeter

The meter does not behave regardless of the setting, ie DC or AC.
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post #9 of 12 (permalink) Old 05-12-2005, 06:06 PM
 
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Re: problems with digital multimeter

To pick up a radio station, you have to hold your arms straight up then spin slowly till you get reception.
Have you thought about returning that unit and trying another one?
Of course I'm no expert on multimeters, or radio.
Ride Safe
Wayne
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post #10 of 12 (permalink) Old 05-12-2005, 07:00 PM
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Re: problems with digital multimeter

Just a thought.. but have you checked your spark plug wires to see if one might be arcing? Usual suspect is the right fron plug..
Just sounds like you are picking up "leaks" from your bike.

Dianna
Conway, AR
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)
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