Question about Kenwood KAC-X541 Car Audio Amplifier

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No sound and current read 0 amps reads 0 it is installed correctly it was workin before then quit the volt indicater started blinkin now the light is constant but no sound the volts reads 12.1

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Check the fuse on the unit first, if fuse is good and you have power to the am you may have fried it. This is common when the speaker load is not adhered to prperly. Make sure your speakers are connected properly (2/4/6/8 ohms) and not exceeding the limits of the amp, this fries them 99% of this time.

Posted on Sep 05, 2009

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12 volt system, hard starting, was told probably an amperage issue. How do I test it and how many amps should I be getting

there is no amperage reading as it is a variable depending on the current being used bu the systems
however voltage on the other hand is adjustable and readable
for a fully charged battery the reading should be 12 volts ( actually 13.2 v) and with the engine running at 2.000rpms the voltage should be 14.5 -14.8 volts
hard starting ( slow cranking speed) can be from a bad battery ( have a load test done at a battery shop) as it will read 12 volts but that drops to below 9 volts when a load is applied such as a starter motor operation
as a result the amps available will also drop and the starter has difficulty turning the engine
dirty battery posts and terminals (should be shiny clean ) or loose terminals will also create too high a resistance for the starter to work
you should take the vehicle to an accredited auto electrical shop where they can:- load test the battery, charge voltage and regulator operation
they can also attach an amp meter clamp around the positive cable to the battery to read the current draw when cranking the engine to use as an indication of possible starter faults
that reading for the starter operation can be as high as 450 amps for a few seconds but if it goes over 500 amps ,then that may indicate a problem starter especially if the battery has a low cc reading
( battery capacity is read as cc amp hour and for a small car would be 250-350 cc ah and for a larger vehicle can be 400-650 cc ah)

Sep 12, 2015 | Cars & Trucks

1 Answer

I have a mastercraft multimeter, it reads volts but wont read milliamps. Checked the fuse, it's good. what else could be the problem? There is only one fuse on the inside, does it protect both volt...

Do you get any readings from the meter when attempting to read amps? Are you connecting the meter properly? Some people assume that you touch the test points the same as a voltage reading but that of course is not correct to read amps. You must use the meter to bridge the connection so that the current flows through the meter, otherwise you will get a zero reading.

Jan 03, 2015 | Cars & Trucks

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Can alternator put out 14.2 volts but not enough amps to charge battery and turn off dattery light?

Yes and no.
It sounds like you have a wiring problem.
The alternator output could be 14 volts and only one or two amps, but that would be enough to kill the warning light. Its more likely the alternator is charging but the current is not reaching the battery.

Aug 26, 2014 | GMC Envoy Cars & Trucks

1 Answer

Bosch 1197311213 EL14V, how can I test to determine that my alternator voltage regulator is still good or bad?

if the charge light is going out after starting then it is charging. Next step is to use a multimeter that has the ability to read volts DC and volts AC. If it shows Volts dc 13.5 to 14.5 volts at around 2.000rpms then it is good . If it shows volts ac then the rectifier in the alternator is not working and needs replacing . Next place an amp meter in the line to the battery and read the amperage .It will read in a ratio to the volts DC so if the volts Dc is up around 14.5 then the current flow will be low but if it reads 12 volts then the current will be high. If the volts dc is over 14.5 volts say 16 volts then the current will be high as the regulator is not controlling the current out put. If this sound daunting then go to an accredited auto electrical shop and have it checked out

Jul 16, 2014 | Cars & Trucks

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Installed a new switch in a bedroom that was not controlling the light or the hunter fan. ( fan and light both work by utilizing the chain)For some odd reason after installing the new switch and testing it...

That's exactly what you should get. When the fan is on a voltage reading across the two terminals will give you 0 volts and when the switch is off you should get 120V _ or -. Reason being when its operating you have current flowing so the potential or voltage across the terminals will be the same on both sides therefore you will get 0 volts. When its off the current is not flowing so there is no voltage drop across the switch so the hot side is at 120V while the other side is at 0 volts and you get a reading of 120V because voltage is a reading of potential deffernece between 2 points in the circuit.

Jul 12, 2014 | Electrical Supplies

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DC 4.5-30V 0-10A Dual LED Digital Volt meter Ammeter Voltage AMP Power

If you want to read just the DC VOLTAGE of your RV battery , with the multimeter in the proper VOLTS range , you would simply connect the red lead to the positive feed and the black lead to the negative feed and read the digital display of the meter.

Whenever you want to read DC AMPERAGE with a multimeter , first set the meter for it's highest amps. Then you must connect the meter leads in SERIES somewhere within the circuit. This means that you will have to first create an OPEN in the circuit and then connect one lead from the meter to one side of the open and the other meter lead to the other wire . For example : let's say we would cut one wire going to a light bulb and then we would connect the AMP meter between the 2 ends of the cut wire , we could now read the AMPERAGE or SERIES FLOW of the current that the bulb draws when it is powered on.
Remember , NEVER connect the AMP METER directly across a powered circuit. It's like putting a direct short across the circuit.
Be sure to select the proper AMPS range setting on the meter before connecting the meter to a circuit. I recommend starting with the HIGH amps setting first to get an idea of just how much the circuit being tested actually draws when it it powered on. If you would happen to first start with a lower amps range , you might blow the protective fuse located usually inside the multimeter. Do no exceed the range of amperage that the meter is rated for.

May 11, 2014 | Vehicle Parts & Accessories

1 Answer

Bmw 320d

recheck all lights including license plate lights, fender lights and confirm that you have the correct bulbs, signal element or double element bulbs and confirm volt & watts

May 06, 2013 | BMW 320D Cars & Trucks

1 Answer

Srs light, crazy odometer then no read outs, engine stalls won't start

Check the battery and alternator wiring connections. Also, check the alternator belt. If it is missing or has no tension, the belt tensioner may be broken. The thumping seems to imply a catastrophic mechanical failure or a small explosion affecting the electrical system, but it may have been unburned fuel igniting in the catalytic converter due to a problem with the engine computer (perhaps it wasn't working right due to the electrical problem).

Jul 09, 2017 | Mitsubishi Cars & Trucks

1 Answer

Draw kills battery

The only draw above 0 should be an infinitesimal amount to hold the radio stations and any alarm requirements.
This will be easier to measure set to ammeter instead of voltmeter, because infinitesimal current can still read 12 volts. A test light also works well, because the light actually show voltage x current. An infinitesimal current will not light a test light.

But if the battery tested good, how do you know it is getting charged? Did you get get an alternator reading of 13.5 volts at the battery, when engine is revved up?

Apr 12, 2010 | 1997 Toyota Avalon

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