Voltmeter screw up? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 19 Old 08-15-2011, 10:13 PM Thread Starter
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Voltmeter screw up?

So I installed a voltmeter on the wee. I decided to tap into the OEM heated grip wire, and the ground back to the battery neg. I tapped into the orange, switched hot wire but on the grip side of the connection behind the radiator. Everything works fine. Until I turn on the heated grips. Then the meter drops to nothing. Not knowing anything about electricity other than that it can hurt you, did I do something wrong by being on the distal side of the main harness connection? My thought in doing that, was that it would be an easier fix if I messed something up.

Thanks in advance.
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post #2 of 19 Old 08-15-2011, 10:30 PM Thread Starter
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And I just hooked up heated jacket and gloves, with the JM CB 2003 all running and it stays nice and green. The heated grips just send the meter to nothing no matter what the rpm's.
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post #3 of 19 Old 08-15-2011, 10:41 PM
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Are you sure you got the voltmeter and battery polarity right? Do the grips work?

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post #4 of 19 Old 08-15-2011, 10:45 PM Thread Starter
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The grip heaters work fine. It's the Kuryakyn meter with a red and black coming out. The black to the neg terminal of the battery, and the red to the orange wire on the grip side of the connection behind the radiator. If I turn the grips up just under half, it will stay green. Anything higher than that and it goes to nothing. Even with rpm's up at 6k with nothing else turned on.
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post #5 of 19 Old 08-15-2011, 10:48 PM Thread Starter
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And Greywolf, I think it's working because when I turned the heated gear up all the way, it dropped just into the yellow. When I twisted the throttle a little bit, it came back to green. I say I think it's working, but there isn't any way that it should read 0 with OEM heated grips which I've had no problems with. Just thought I may have been affecting something by where I hooked into the switched hot wire.

Last edited by tuckerman; 08-15-2011 at 11:21 PM.
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post #6 of 19 Old 08-18-2011, 11:02 PM Thread Starter
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Alright, this is killing me. Is it the voltmeter, the grips? Since I don't know anything about electricity, what is the best way to tell? Should I put a different meter on the battery while the bike is running? I just don't want to get stranded. Ignorance was so blissful.
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post #7 of 19 Old 08-19-2011, 05:50 PM
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Originally Posted by tuckerman View Post
And Greywolf, I think it's working because when I turned the heated gear up all the way, it dropped just into the yellow. When I twisted the throttle a little bit, it came back to green. I say I think it's working, but there isn't any way that it should read 0 with OEM heated grips which I've had no problems with. Just thought I may have been affecting something by where I hooked into the switched hot wire.
Really hard to tell what you are talking about. What part is turning green/yellow etc? the voltmeter?

And the voltmeter also has a digital readout of the actual voltage?


You sure you didn't tap into the heated grips connector after the controller? (between the controller and the grips?) if so you are measurign the voltage going to the grips which may either change with the controller setting (using a different resistance) or change the duty cycle (a digital controller). Either way will screw up the voltmeter reading.

You should have your voltmeter connected into the heated grips circuit before the grips or the controller.

04 blue wee
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post #8 of 19 Old 08-20-2011, 12:25 AM
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You could save yourself a lot of headache by running two thin gauge wires directly to the battery terminals through an on/off switch to your voltmeter.
That's the most accurate place to measure the voltage anyway.
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post #9 of 19 Old 08-21-2011, 09:04 AM
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Where did you mount the meter? I have one and am trying to figure out where to mount it.

I was thinking about just tapping into the back of a the panel lights plug.

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post #10 of 19 Old 08-21-2011, 12:05 PM
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i agree

I agree, you're reading the voltage in the grips. Suggest you fine a "switched" hot wire and tap into it, or run wires from your battery directly to the meter. Do your like the multi light deal??

Remember do not use the frame for your grounding system. = Greywolf can explain that better than I can.
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