Alarm

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Alarm

Postby Couttsy77 » Sat Sep 02, 2017 10:11 am

I have a 2013 regal 28 express . We installed an amplifier for the stereo (done by professional) and our battery started to die . We replaced both batteries and installed a high output alternator and a new starter and a new belt . Now the alarm goes off when we are sitting and the engine is at idle . Once we start moving and the rpm rise the alarm goes off. If we stop and idle the engine it the alarm goes off again. The oil pressure is normal . The engine temp is normal (happens even when engine is cold) and engine oil should be at a good level . Not sure if this is a battery issue or an engine issue? Any ideas?
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Re: Alarm

Postby lg260ss » Sun Sep 03, 2017 6:02 pm

What engine do you have and what type of alarm is it? Is it constant,or is it beeping?

With regards to batteries, I have the same boat and added a second deep cycle house battery to the house side circuit. It allows me to stay out longer without worrying about charging. I can leave the fridge running and run the stereo for extended periods, it's an easy upgrade and well worth doing. I installed the 3rd battery in the engine room on the starboard side next to the trim tab pump.
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Re: Alarm

Postby aviator1 » Sun Sep 03, 2017 9:00 pm

As LG said, count your alarm beeps per minute and report back...my other question, the alternator you installed...is that an approved alternator for this engine?
Sounds to me like an alternator output issue or a ground issue, if you can have access to your batteries with the engine running (safely), place a volt meter across a battery and let us know what the voltage is. If access on a 28 Express is not feasible, you can do it thru a DC cigarette lighter socket or your fuse panel...I am not familiar with a 28 Express layout maybe LG can chime in.
it might not hurt to review what the good folks did with your sound system.
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Re: Alarm

Postby rt160001 » Mon Nov 27, 2017 1:26 pm

Had you had any battery or alarm issues prior to installing the amplifier? The first place I'd look is that amplifier installation, sounds like they may have "hijacked " the power from where they shoud'nt have.
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Re: Alarm

Postby SvedasFish » Tue Nov 28, 2017 1:47 pm

Did they install proper gauge wire to supply the amp?
If too small then the alarm could sound because of the voltage drop. Your running engine/alternator would boost it to stop the alarm.
(engine off)If the amp adjusts for power, then it would try to draw more current , which would drop the voltage further.

Just a suggestion.
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Re: Alarm

Postby gofast24 » Mon Feb 26, 2018 12:17 pm

SvedasFish wrote:Did they install proper gauge wire to supply the amp?
If too small then the alarm could sound because of the voltage drop. Your running engine/alternator would boost it to stop the alarm.
(engine off)If the amp adjusts for power, then it would try to draw more current , which would drop the voltage further.

Just a suggestion.

Another thought= We have two JL Audio amps on board, a 600w RMS sub amp and a 4X 60 w RMS amp for the bridge deck and radar arch speakers. Both have a + 12 VDC "turn on" signal wire. There is a breaker in our salon area that switches the "turn on" signal to fire up both amps. If you leave both of the amps "on" the amps will eat a small, but significant amount of current from your batteries, these need to be turned off when not using the audio system! Note = Some head units have a 12 VDC trigger signal terminal that also could be used to turn on the power amps so maybe check the wiring to your system.
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Re: Alarm

Postby gofast24 » Tue Feb 27, 2018 12:24 pm

SvedasFish wrote:Did they install proper gauge wire to supply the amp?
If too small then the alarm could sound because of the voltage drop. Your running engine/alternator would boost it to stop the alarm.
(engine off)If the amp adjusts for power, then it would try to draw more current , which would drop the voltage further.

Just a suggestion.

Have to wonder if the "alarm" was present before the amp install or not? We dont have any alarm for low battery voltage, just a digital OLED voltmeter on the helm (what is sending the alarm?). Also, it becomes obvious if the battery(s) are low when you crank the engine (labored cranking RPM) then there is a problem with the batteries and not the stereo system? Also, my thoughts about the size of the B+ power cables to the amp = Smaller (a higher number AWG) cables to the amps will have a higher voltage drop and therefore, less current available to the amp. Results with a too small (diameter) cable is the amp will start clipping and the power feed wires will get "hot". Neither situation is good especially the power cables getting hot!
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