Voltage Regualtor 1982 Harley Davidson How To Check Flh?

How do I know if my motorcycle voltage regulator is bad?

You’ll note signs right away like poor starts, fluctuating meter readings, and dimmed headlights. around 13 volts, the bike will start to drain the battery. When this happens, it’s only a matter of time before the engine stops completely.

How do you diagnose a bad voltage regulator?

Another way you can tell the voltage regulator is bad is when the car lights keep dimming or flickering. After all, the voltage regulator is supposed to keep the power flowing to the lights, so it’s no surprise that those lights don’t work right anymore once this part goes bad.

What causes a voltage regulator to go bad?

They usually fail because they’re under rated for the constant current draw. Running the motor with the battery disconnected – or even a poor contact on the battery terminals – can also blow them.

How do you test a 12v voltage regulator?

The best way to test a voltage regulator is with a multimeter, and what you do is you put your multimeter clamps directly on the battery terminals. Positive read to positive and black to negative. And you said it to voltage, and with the car off, you should have a little over 12 volts. That’s that’s a healthy battery.

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What happens if voltage regulator fails?

A damaged or failed voltage regulator can rapidly diminish the alternator’s ability to cycle power from the battery. This may cause the vehicle to experience dimming or pulsating external systems, such as headlights and dashboard elements.

Can I drive with a bad voltage regulator?

A bad voltage regulator may cause it to simply not work or behave erratically. You’re not likely to be able to start the car at all, but even if you could, it wouldn’t be wise to do so without knowing how fast you’re driving, how much fuel you have left, and other critical info.

Why is my voltage regulator overcharging?

Alternators that overcharge will typically produce excess voltage to the battery, making the battery case swell up, become very hot and lose its electrolyte through boiling. This surge disrupts the wiring in the alternator, causing an overcharging condition.

What are the signs of a bad stator?

The most obvious symptoms of a bad motorcycle stator include no spark, weak spark, or intermittent spark (also known as misfiring). Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced.

How do you test a voltage regulator on a Harley Davidson?

To check the regulator unplug it from the stator. Take a test light and clip it to the negative terminal of the battery and then touch first one pin and then the other on the plug that goes to the regulator. If you get even the slightest amount of light from the test light the regulator is toast.

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Will a motorcycle start with a bad rectifier?

A rectifier converts alternating current (AC) to direct current (DC) to charge the battery. Since motorcycles require battery power to start them up, a bad rectifier will eventually result in the motorcycle not able to start.

Where is my voltage regulator located?

The voltage regulator is usually found inside or on the back of the alternator case. Increasingly, though, late-model vehicle have the engine control module (ECM) regulating alternator voltage output through a special circuit.

How do you check the output on a Harley stator?

AC Output Check:

  1. Unplug the regulator plug from the stator.
  2. Start motorcycle and change Voltmeter to AC volts.
  3. Probe both stator wires with your meter leads.
  4. The motorcycle should be putting out approximately 18-20 ACV per 1,000 rpm.
  5. Generic Specs:

What voltage is my Harley battery?

Is a Harley Davidson Battery 6 volt or 12 volt? Harley-Davidson motorcycles use either a 6 volt or a 12 volt battery. Harley-Davidson motorcycles made after the early 1960s are using 12 volt batteries, while older Harleys made before the early 1960s are using a 6 volt battery.

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