Wiring voltmeter
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Tourer
Joined: May 2016
Posts: 328
Likes: 64
From: Nashville, TN
Wiring voltmeter
After changing my stator out last month (thanks for the help on here!), I'm wanting to wire up a voltmeter that will sit on my master cylinder by the right grip.
I don't want it to be on all the time, just when the ignition switch is on. I've found a couple spots to tap into, but on my handheld meter those leads all measure around .2v lower than directly on the battery terminal.
What's best? Just tap into one of those and call it a day? Or wire directly to the battery with a relay switch in between?
I don't want it to be on all the time, just when the ignition switch is on. I've found a couple spots to tap into, but on my handheld meter those leads all measure around .2v lower than directly on the battery terminal.
What's best? Just tap into one of those and call it a day? Or wire directly to the battery with a relay switch in between?
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,199
Likes: 3,087
From: NW AR
The most important voltage is what is at the battery, certainly. However, the complexity of adding a relay just for the volt meter is a drawback. If it were me, I would connect to a switched wire somewhere and call it good. Then you really look for differences from "normal." That's how the bikes with a factory volt meter such as my FLHT are wired. You could also just wire it to the battery and leave it. If it is a proper volt meter, not cheap junk, it would be about 20K ohms/volt load, and the current draw would be inconsequential.
Road Master
Joined: Sep 2013
Posts: 1,054
Likes: 441
From: Tejas
With a voltmeter you are only really sort of telling the story. Actually, you're just showing it is breathing versus a full readout, and that is all you need. As long as it is above 12 you are golden.
The easiest method will work just as well as running new wire all the way up in the end. Think oil pressure gauge. LOL..
Griz
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Tourer
Joined: May 2016
Posts: 328
Likes: 64
From: Nashville, TN
That was pretty much what I was thinking. The voltmeter I got is nothing expensive or super detailed; it's just there so I know if the battery is draining.
Accessory wire tap it is.
Accessory wire tap it is.
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