Amp gauge hook up, ammeter hookup help

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Use either butt connectors or the commonly supplied wire taps to connect the voltmeter wires to the wiring harness. Do you want the main feed going to the panel in your house going through the living room first, I think not. The voltmeter part is simple, the ammeter takes the the voltage and polarity across a sense resistor and shows the current pull.

  • Ignition, lighting, heater fan, accessories, and electrical power in general flows through the connector.
  • The smart thing with these is to ground them to the chassis, and tap into the dashboard light power wire.
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  • Just curious, is the regulator or cut out attached to the generator?

Some alternators are connected using only one wire for the positive terminal, dating sites for shift workers and the negative connection is through the mounting bolt that connects the alternator to the automobile frame. This is a relay that triggers the cooling fans to come on at predetermined temperatures. It was an arrangement resulting with a very long wire circuit charging the battery.

Attach the voltmeter negative to the ground wire with a wire tap, or to the metal chassis using a screw and drill. If I had an ammeter I would have known right away I wasn't charging. Crimp a round wire terminal onto the end of the black negative wire - coming from your amp gauge.


In general, ammeters get a bad wrap but are a superior gauge. And yes the meter should go in series. There are a variety of gauges available, in both analog and digital, and in various colors and styles to suit your vehicle. Never mess with a yellow wire with a bold black stripe around it. This is why i don't run amp gauges.

This gauge is included in Diagram A. Start the vehicle and make note of the alternator's amperage reading on the gauge. Turn on the lights and make sure the gauge is illuminated. How do I hook this into a one wire alternator?

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Hey guys its been a while. With normal but frequent use, most of these Dodge trucks will have electrical wiring problems. The warning light was often standard equipment and the gauge was an option.

How to Install a Car Volt Amp Gauge (with Pictures) - wikiHow

Amp Wiring Gauge Chart

Using a three wire connector, crimp that wire to the lighting wire. Step Install the negative battery cable and tighten until it is snug. Making use of this configuration requires the harnessing of the frame-mounting bolt. Mopars had direct reading ammeters for a long time, updating a website using dreamweaver and they are still giving people fits. That's what I have in my hot rods.

Power mad it hasn't snowed here for a couple of days so your father in law is in sunshine again. You need to carry spares, and a pair of pliers to crimp, but they save the harness. Tighten your battery terminal for good contact.

How to Install an Amp Gauge on a One Wire Alt

Wiring diagram for 12 volt amp gage

How to Wire Voltmeter Gauges on a Car

It Still Runs
How to Install an Amp Gauge on a One Wire Alt

The plastic connector body surrounding the female flat blade terminal is beginning to melt away. Push the mounting bolt through the alternator mount, dating sites the wire terminal and on into the vehicle body. Position it away from the battery.

My guess car companys quit amp meters because other options were cheaper. The downfall of this warning light is that, when it comes on, the voltage in the system is very low - and if the battery becomes low enough, the vehicle will end up stalling. Volt meter tells nothing other than battery condition and if alt is working. Step Wrap the wire loom around any exposed wiring.

Use gauge wire for the hookup if the wire was not provided with the voltmeter kit. Hook them up backward, and the voltmeter will work backwards, indicating a discharge when in fact it is charging. If you're not sure about how to do that, maybe you better leave it disconnected! Attach the wire coming out of the connector to the positive terminal of the voltmeter and the end going to the steering column to the negative side. If you are going to run all of the current, not only alternator current, you will need larger wire.


  1. The fact that you bought the used ammeter doesn't require you to use it.
  2. Most vehicles built today come with a warning light on the dash that looks like a battery.
  3. Aftermarket voltmeters can come with a number of options, not least of which being a back-light for night running.

As far as I'm concerned, an amp meter inside the car is a fire waiting to happen as evidenced by the reply above. None of these trademark holders are affiliated with Yesterday's Tractor Co. Crimp a wire terminal onto the end of the red wire coming from your amp gauge. When electrical power loss occurs, this is certainly not the first place to look for the problem.

With sufficient use, the non-air equipped trucks will also have electrical problems stemming from the same cause. Related questions How many amps should my car's alternator have for a audio amplifier? Step Find the wire that goes to the lighting circuit. But you have to watch what you wire into, because if you wire into say the heater, then you are going to measure the current being used by the heater, not what the alternator is producing.

Part 1 of 2 The purpose of a voltage gauge
Car Amplifier Wire Gauge Chart

How to Wire Voltmeter Gauges on a Car

Tip On automobiles, regardless if an alternator is of the one-wire variety, the electrical pathway always flows from negative to positive. And the last time I checked the alt. The terminal should be suited to the diameter size of your vehicle's battery terminal so you can slide it down over the battery terminal. Step Attach an eyelet to the end of the wire you just ran from the lighting circuit wire.

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Another woud be that an Amp Meter would channel a lot of Amps through wiring that goes into the cockpit. If it is an alternator with regulator same answer. It is perfectly safe to test these circuits. Both the alternator and the battery were mounted up front, under the hood.

This resulted in the car maker making a working amp guage show dead center if the alternator belt fell off the car and was laying on the highway. No doubt an attempt to get the old Dodge up and running. Well almost ready for fire in the hole. It should now swing the right way. The typical wire on a amp alternator could not handle amps for any amount of time.

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