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Old 04-07-2014, 09:53 PM   #1
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Default 12V Power outlet in Not Working Properly

Hi Folks,

Need some help please. I have a 2003 2400SC. It has 2 12V sockets one on the dash and one in the cuddy. Neither of them seem to be working properly. I have just bought the boat. I checked the cables with a volt meter and all seems ok. The reading on the meter was 12.55 Volts. However, nothing works when plugged in. I changed the socket today to see if it was the socket itself which was faulty but the new one (which I was told by the owner of the boat spares shop was actually better than the original) didn't work either. When I plug my phone charger in the light on the part of the charger which is inserted into the socket lights up but it won't charge the phone itself. It is obviously getting some sort of power but not enough to actually power anything. Everything is in working order because I tried everything in my car socket and they work perfectly.

The boat currently has just one battery. The battery is one of the larger ones, is brand new and has a full charge. The engine is the MPi 5.7L 350MAG.

Can anyone help with this please?

Thanks,
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Old 04-07-2014, 10:33 PM   #2
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I had problem with one of my 12v sockets as well. Who ever was working on my boat before made some mess. It came out that connected wires to the socket were flipped. I burned few phone chargers before I figure it out
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Old 04-07-2014, 10:42 PM   #3
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Hi, if the wires were flipped on mine then would that not mean that there was zero power from the socket? As I said it lights up the charger part of my phone charger but that's all.... its frustrating as I can't use anything... phone charger, 12V TV, etc..

Thanks
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Old 04-07-2014, 10:57 PM   #4
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I think what forbes is saying that 12V + and ground were backwards.

Using a voltmeter touch the positive lead to the center contact of the socket and the negative lead to the side metal contact. It should read +12V if so it's ok else if -12V the wires are backwards.
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Old 04-07-2014, 10:58 PM   #5
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Does it say -12.55 volts on the meter? Negative 12.55
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Old 04-07-2014, 10:59 PM   #6
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Oh you beat me to it Mike.
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Old 04-07-2014, 11:11 PM   #7
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Hi Mike, when I used the volt meter on the 2 wires going into the socket in the cuddy the meter read 12.55 not -12.55. So based on that you would expect it to work fine. However, it doesn't. I tried several different things in it, all obviously 12V items - phone charger, TV, 12V extension cable, etc. and nothing is getting any power. The light power light on all of the items are lighting up so they are getting some sort of power but seems that its not enough to power anything. For example, on the 12V power lead for the TV, the part that is inserted into the socket lights up. However, there is then a cable which runs to a square shaped box type thing then another cable leads from this and plugs into the TV. There is also a power indicator light on this black box but that's not lighting up and the TV isn't getting power... It's confusing....

Any thoughts?

Thanks,
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Old 04-08-2014, 02:20 AM   #8
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Try measuring the socket voltage while one of the devices is plugged in to see if it still reads 12V. If not then you may have to trace back to where the power is good (fuse box) cleaning any connections which may be causing a voltage drop.
If the voltage is good I would use a plug that you can cut the wire on and stip the ends so you can measure for voltage when it is plugged in.

Let me know what you find from here.
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Old 04-08-2014, 11:49 AM   #9
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Thanks I will try that, Mike.

I'm no expert but I'm guessing that because the charger light is coming on when I plug it in then it's not an issue with a damaged fuse or breaker circuit? If that was the case then no power at all would be getting to the 2 wires that connect to the back of the socket?

Also, this may be a really stupid question but does the ignition need to be switched on for the 12V outlets to work? Or does one of the AUX switches on the dash board need to be on for the outlets to work? Just trying to rule out anything obvious....

Thanks
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Old 04-08-2014, 12:38 PM   #10
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Quote:
Originally Posted by Ernie View Post
Thanks I will try that, Mike.

I'm no expert but I'm guessing that because the charger light is coming on when I plug it in then it's not an issue with a damaged fuse or breaker circuit? If that was the case then no power at all would be getting to the 2 wires that connect to the back of the socket?

Also, this may be a really stupid question but does the ignition need to be switched on for the 12V outlets to work? Or does one of the AUX switches on the dash board need to be on for the outlets to work? Just trying to rule out anything obvious....

Thanks

Not sure as I have seen it either way. However when you are plugging into to the socket and get the charger light to come on do you need to have any switch or the key on? No power no light.

I am just wondering if the boats sockets are not mating properly with what you are plugging in for some reason.
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