I havent been able to get my system going, it wasnt getting enough voltage..it was getting 12 volts with the the power wire by itself, but once i hooked it up to my amp, it went down to 3.5 volts (if anybody could tell me why that is happening that would be great!!!!!!!!!) but i just put a car battery in the trunk, and it solved my voltage problem, but im wondering if i will now need a heavy-duty alternator......thanks in advance
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Re: heavy-duty alternator or not??
There's a serious voltage drop somewhere in the wiring. If the voltage went up when you installed a 2nd battery closer to your amp, I would suspect that the power and/or the ground is either not getting a good solid connection or is too small a gauge for it's length, or both. I'd try to find the problem before installing additional batteries or a heavy-duty alternator.
The only time a second battery is useful is if the audio system is to be used with the car off. And then it should be installed with an isolator to keep it from the rest of your car's electrical system.
After you have made sure that your wiring supports the amp and only if your total audio system power is 1200 watts RMS or more, you may need to: 1. Upgrade to a high output alternator 2. Upgrade to a heavy duty deep-cycle battery 3. Upgrade the "Big 3" - that is to replace (or add to) the power wire between the battery and alternator, the ground from the battery to the chassis and the ground strap from the
engine/transmission to the chassis with at least 2 AWG wire and preferbly 1/0.
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May be but I doubt it. The alternator is not putting enough power to keep the light out. IT works like this battery power (12 volts) flows through the light to the alternator and puts it on when the alternator starts to charge the extra voltage from the alternator (14.5 volts) flows back through the light and as the 2 volts difference is not enough to make the light work it goes out . IF you are measuring 12 volts at the battery and 12 volts at the alternator then then the alternator is not charging. What you should have is 12 volts at the battery and as you rev up the engine the voltage should increase at the battery up to 15 volts maximum at around 2000 RPM
Hi, you're Rectofier has failed if you have A/C voltage and no D/C voltage. This is what converts A/C volts to D/C volts. If you have a diagram or any parts manual, you can locate this part and replace it. You will need to go to a place that repairs these chargers, or where you bought it to order or but a new one. Sincerely, Shastalaker7
12 volts but you have to do the following in order to run your amplifier with out any problem Upgrade the alternator to a high output alternator.Upgrade to a heavy duty deep cycle battery Upgrade the "Big 3" - that is to replace the power wire between the battery and alternator, the ground from the battery to the chassis and the ground strap from the engine/tranny to the chassis with at least 1/0 AWG wire.
With engine running used a voltmeter and check voltage at battery, you will be checking alternator out put voltage, should have a reading of no less then 13.0 volts, if less bad alternator, the reason it keeps going dead is that the car is using the battery to run it .till the battery has no more power, then you jump it and the battery is charge up again and will run again till it goes dead again.
ck your alternator if you have one large white wire and two smaller dark wires you've got an internal regulator the entire alternator needs to be replaced if bad
a simple voltmeter you can still buy at radio shack will tell you in about 30 seconds
set meter for dc volts 25 volt scale place red probe on battery positive and black probe on battery negative note reading on voltmeter (11 to 12 volts) start truck/car at idle reprobe battery same as before volts should come to about 12/13 have someone give a slight throttle to engine volts should come to 13.8 volts and stay there never going over this if any volt reading was not as described Yep your voltage regulator/alternator is bad
11.50 volts won't be enough potential to overcome the batteries 12 volt standing charge.
Either your alternator is shot...which you can check by going to an Autozone and having a free system check. Or your battery is already going bad and not sending enough voltage to the alternator to make the 13.8-15.8 volts it should be making.
If the alternator is the culprit a good mechanic will swap it out for a fairly low price and save you a lot of headaches.
a higher voltage means more drilling power but it can also mean more weight - don't buy a drill you won't need, 12 volt drills are powerful enough for most home users, bigger models just weigh more so think carefully about what you will be using the drill for.