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Marine Amplifier Wiring

Old 05-30-2016, 12:39 PM
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Default Marine Amplifier Wiring

Looking at a marine Bluetooth amp that has a weak installation manual to say the least...The amplifier has 3 connections (aside from the speaker connections):

1. Black - Indicated as ground
2. Yellow - Indicated as +12V battery
3. Red - Indicated as +12V switched

Wiring/electrical is my weak spot...I have a Blue Seas fuse block with ample available connections. In this case, I would assume the black and yellow go to the fuse block. For the red, is that meant to be connected to an ignition activated source? The amp also has a remote power switch. I am not going to have a head unit of any kind. I'll be streaming to the amp directly via Bluetooth. I would imagine a head unit might have a switched wire connection to power up the amp when it's turned on...

http://www.jensenmarinedirect.com/je...amplifier.html

I just don't understand why you'd need a switched connection and a power connection, when there's a power switch for the amp? Would the switched connection not require that the remote power button be connected? If I wanted to use the remote power button, would I wire the red and yellow together, or just leave the red unconnected?

Thanks!

Last edited by Commocean; 05-30-2016 at 12:51 PM.
Old 05-30-2016, 06:30 PM
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The switched connection would normally be connected to the amp turn on on your head unit. In your situation where you just want an on/off scenario, I would connect both the red and yellow to the switch side and black to a ground. The red is your main power with the yellow typically being a low voltage turn on supply.
Old 05-30-2016, 06:33 PM
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Simple


yellow goes to your house positive bus bar (or the switched side of your house battery switch).

red goes to a switch of your choice (in a car, you'd go to the acc feed.)(switch also draws 12v from the house battery system) if you want to be able to turn it on and off. otherwise, just connect it to the same place as the yellow, and it will be always on.
Old 05-30-2016, 07:03 PM
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they are taking colors and wire purposes of a head unit and using it for an amp. I have no idea why. a head unit needs all 3 because it has a battery wire for memory when the switch is off. and a normal amp is blue for switching.

I would just put red and yellow together at fuse block. and black to ground.

or maybe it needs the battery power to remember it's Bluetooth connection list.
Old 05-30-2016, 07:05 PM
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Originally Posted by smac999 View Post
the yellow goes direct to the battery post (fused) before any switches. this keeps power for the stereo memory (clock, radio stations) the red and black goes to your fuse block.

lots of difference answers above... this one is correct..

if the boat is not plugged in for periods of time, and you are worried about battery drain. put the red and yellow together at the fuse block. the stereo will likely lose all settings each time the boat is used.
its not a radio with stations to save... its an amplifier with a blue tooth unit.

IMHO, the only thing that should be connected to the non switched side of any boat battery system is a bilge pump.
Old 05-30-2016, 07:15 PM
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Originally Posted by smac999 View Post
the yellow goes direct to the battery post (fused) before any switches. this keeps power for the stereo memory (clock, radio stations) the red and black goes to your fuse block.

lots of difference answers above... this one is correct..

if the boat is not plugged in for periods of time, and you are worried about battery drain. put the red and yellow together at the fuse block. the stereo will likely lose all settings each time the boat is used.
its not a radio with stations or clock to save... its an amplifier with a blue tooth unit.

the manufacturers data is perfectly clear - the yellow wire (with inbuilt fuse) goes to battery +ve (like I said, I would go switched side of battery switch) - supplies power to the amplifier.

red wire goes (unfused) to a 12v switched source - simply turns the unit on and off.

IMHO, the only thing that should be connected to the non switched side of any boat battery system is a bilge pump.
Old 05-31-2016, 05:41 AM
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Thanks guys...What has me confused is that the amp also comes with a power button that you can install in the dash to turn the amp on and off...If you connect the red to an ignition activated source, I don't see why you'd also need a power button, unless I guess you wanted to turn the amp off while the ignition was on, providing some additional flexibility...

I think I'll combine the yellow/red, and just use the power button on the amp to turn it on/off...
Old 05-31-2016, 06:16 AM
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they probably supply the dash button for those who want to switch it separately to the ignition, but mount the black box where you cant reach it.

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