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post #1 of 41 Old 07-14-2019, 07:59 AM Thread Starter
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How to hook up a volt meter, is this the correct way?

Can I hook the volt meter to the + side of the coil, sounds easy then trying to figure out which wire to hook up into at the key switch. Then hook up the negative to anything that screws into the engine block for a good ground, or is the battery a better choice?........................ Can I hook the meter light to that extra 2" wire that's coming from the back of my light switch? Must come that way from the factory, for future lights so nice of them. lol???? Going to get a amp meter too.

1979 314 Engine K321AQS
1981 49" snow blower
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post #2 of 41 Old 07-14-2019, 09:09 AM
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re: How to hook up a volt meter, is this the correct way?

You can 'hook' a meter up to most anything, getting accurate and correct readings are another matter entirely. This is where the ability to read and understand electrical schematics comes in quite handy. What exactly are you trying to test and on what and why do you want to?

Get yourself an accurate and affordable test instrument that can do both.
https://www.amazon.com/Milwaukee-223...s%2C173&sr=8-4
OR
https://www.amazon.com/Fluke-600A-Tr...gateway&sr=8-8
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post #3 of 41 Old 07-14-2019, 09:51 AM Thread Starter
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re: How to hook up a volt meter, is this the correct way?

I was told by jd tech. when my regulator died it killed my battery. That's why i wanted to install the volt meter. I have a Craftman digital clamp meter and AUTOOL Car voltage Battery Tester.

1979 314 Engine K321AQS
1981 49" snow blower
48" mower deck

Last edited by mlizotte; 07-14-2019 at 10:09 AM.
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post #4 of 41 Old 07-14-2019, 10:05 AM
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re: How to hook up a volt meter, is this the correct way?

Me, I attach mine to the pos and neg battery terminals because that's what I want to know; battery voltage.
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post #5 of 41 Old 07-14-2019, 10:13 AM Thread Starter
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re: How to hook up a volt meter, is this the correct way?

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Originally Posted by bruceatlam View Post
Me, I attach mine to the pos and neg battery terminals because that's what I want to know; battery voltage.
Won't you through a lot of cheaper ($20.00) gauges that way, it's always on right ?

1979 314 Engine K321AQS
1981 49" snow blower
48" mower deck
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post #6 of 41 Old 07-14-2019, 10:45 AM
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re: How to hook up a volt meter, is this the correct way?

Mike, The "extra 2" wire" is for connecting an hour gauge. And yes, you can hook up a voltmeter to that connection. When you turn the key off, power will be disconnected to that terminal and you won't go through a bunch of gauges...or kill your battery! A voltmeter doesn't draw much current, only milliamps, but in a case like storing a tractor for winter without a battery tender, you could discharge you battery to a point where it won't crank.

I've also attached a 314 wiring diagram. Hope this helps, Bob
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post #7 of 41 Old 07-14-2019, 01:00 PM Thread Starter
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re: How to hook up a volt meter, is this the correct way?

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Mike, The "extra 2" wire" is for connecting an hour gauge. And yes, you can hook up a voltmeter to that connection. When you turn the key off, power will be disconnected to that terminal and you won't go through a bunch of gauges...or kill your battery! A voltmeter doesn't draw much current, only milliamps, but in a case like storing a tractor for winter without a battery tender, you could discharge you battery to a point where it won't crank.

I've also attached a 314 wiring diagram. Hope this helps, Bob
Thanks for the diagram! I did pick up a a battery tender, but you have to make sure it didn't trip the breaker in the house during the winter. lol............. I removed my broken amp meter for the moment. There were no wires behind it and no broken wires at the circuit breaker or a broken wire at the key switch on the battery terminal ???? Very strange!

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post #8 of 41 Old 07-14-2019, 04:04 PM
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re: How to hook up a volt meter, is this the correct way?

Even if the ammeter wires were there they would not work for voltmeter. An ammeter is connected in series with a power source and voltmeter is across the source to ground.


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post #9 of 41 Old 07-14-2019, 04:23 PM Thread Starter
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re: How to hook up a volt meter, is this the correct way?

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Even if the ammeter wires were there they would not work for voltmeter. An ammeter is connected in series with a power source and voltmeter is across the source to ground.

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I was just saying it was odd that that the wires for the amp meter were both missing.

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post #10 of 41 Old 07-14-2019, 11:45 PM
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re: How to hook up a volt meter, is this the correct way?

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Originally Posted by mlizotte View Post
Thanks for the diagram! I did pick up a a battery tender, but you have to make sure it didn't trip the breaker in the house during the winter. lol............. I removed my broken amp meter for the moment. There were no wires behind it and no broken wires at the circuit breaker or a broken wire at the key switch on the battery terminal ???? Very strange!
The ammeter on my JD214 has no wires, it just has a wire pass through a Chanel on the back of the gage itself. It reads charge and discharge through the wires insulation.

Mike

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post #11 of 41 Old 07-15-2019, 01:26 AM
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re: How to hook up a volt meter, is this the correct way?

The reason there was no connection to the ammeter is that it’s cheaper. The wire as stated above induces a magnetic field that is picked up in the elchepo meter. Ran into these meters on several riders. The difficulty in trying to install a different meter of “any” kind is finding one to fit the old mounting hole in the dash. I’m cheap, usually rip and toss the meter. As a general rule, these charging systems give very little problems charging. Keep the battery terminals clear of corrosion and tight. The vast majority of time, you will have very little problems, if the engine doesn’t want to start, especially in spring for the first cutting, I just charge long enough to get mine started and usually by the time I’ve finished mowing, no more charging is required. One modification I’ve made to all my mowers, I add an inexpensive shut off valve in the fuel line. Bought bout 6 at a time off the internet. Last cutting, I close the valve and run the carb dry with engine running until it dies and add a shot of “Seafoam” to any remaining furl. Spring, open the valve, short shot of starting fluid, one, max 2 pulls on starting rope, or 2 - 3 seconds of starter activation on my riders and I give which ever mower started to my wife. “HEY”, that’s what she wants - - - - - you think I’m “Brain Dead” and going to change that setup. “Eat your heart out in envy men.”
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post #12 of 41 Old 07-15-2019, 07:31 AM
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Quote:
Originally Posted by mlizotte View Post
Thanks for the diagram! I did pick up a a battery tender, but you have to make sure it didn't trip the breaker in the house during the winter. lol............. I removed my broken amp meter for the moment. There were no wires behind it and no broken wires at the circuit breaker or a broken wire at the key switch on the battery terminal ???? Very strange!
A battery tender draws very little, I run one all winter off a 50' extension cord to garage, you'll never even know it's on.

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post #13 of 41 Old 07-15-2019, 08:28 PM
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re: How to hook up a volt meter, is this the correct way?

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Originally Posted by mlizotte View Post
Thanks for the diagram! I did pick up a a battery tender, but you have to make sure it didn't trip the breaker in the house during the winter.
If a battery tender trips your breaker, something is very, very wrong.
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post #14 of 41 Old 07-16-2019, 09:09 PM
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re: How to hook up a volt meter, is this the correct way?

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Originally Posted by spokes100 View Post
A battery tender draws very little, I run one all winter off a 50' extension cord to garage, you'll never even know it's on.

I have no garage and my shed is 75 feet from the house. I remove the battery after the last cut, take the battery to my basement, put it on the bench and put my charger on trickle. I disconnect the charger after it is charged but make sure it stays in the 13V range. I do the same for my spare during mowing season. Batteries can last several seasons even when warranted for a short year if you maintain them. It works or me. I replaced the voltage regulator about 3 years ago. My 30 yo 175 is quirky.

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post #15 of 41 Old 07-16-2019, 09:35 PM
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re: How to hook up a volt meter, is this the correct way?

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If a battery tender trips your breaker, something is very, very wrong.

Right: might be a GFCI breaker. If a standard 20 amp breaker it's not the Battery Tender, it's deeper than that.
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