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Old 08-07-2011, 18:19   #1
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Help - 1989 2450 Bayliner

I have had issues with the electrical system. Basically when the motor stops running at times I loose total power. I notice that when the motor is running the voltage bounces between 13 and 14 v. I just replaced both batteries and they are good. I checked the batteries when the power was goes out and I get 13.1 v ( right after I turn the motor off). Very frustrating. Help!
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Old 08-07-2011, 18:23   #2
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Re: Help - 1989 2450 bayliner

Check the ground cable connection (at the engine block?) Just one possibility....
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Old 08-07-2011, 19:19   #3
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Looks good. I am getting the correct voltage at the block bolt. Is there a master fuse or breaker/reset somewhere in the engine compartment somewhere? Is there a timed automatic reset somewhere?
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Old 09-07-2011, 10:51   #4
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Re: Help - 1989 2450 bayliner

Is there a battery selector switch? It sounds like a loose connection somewhere, like the alternator is feeding everything while the motor runs instead of the battery...s Maybe a cable connection on the back of the switch panel...? or loose connection on the selector switch..?
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Old 09-07-2011, 12:16   #5
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I think I need to go through every connection and wire starting at the battery. In order to kill all power, I agree there must be a faulty main line somewhere. Especially when the batteries are good. It sound painful to do but I think I must.
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Old 09-07-2011, 12:17   #6
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There is a battery selection switch
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Old 09-07-2011, 12:18   #7
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The alternator does feed everything while the motor is running doesn't it?
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Old 09-07-2011, 17:02   #8
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Ok I think I found the issue. The main wire harness plug. When I wiggled the plug the power would turn off and on. I disconnected the male and female fitting to clean. Now I cannot get any power.
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Old 10-07-2011, 06:44   #9
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Re: Help - 1989 2450 bayliner

Bayliner provides an Owner’s Manual AND an Owner’s Manual Supplement with each boat. The Owner’s Manual contains general information only’
The specific information about your boat, including WIRING Diagrams, is in the Owner’s Manual Supplement. For specific information about your boat, download or view the Owner’s Manual Supplement
Here ➥ Bayliner Customer Care
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Old 10-07-2011, 09:40   #10
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Re: Help - 1989 2450 bayliner

sounds like you are zeroing in on it. maybe a loose wire in the back of one of those plug pins? is it corroded much? Worse comes to worse if it's in the right location you could use a terminal strip inplace of the plug. Are there like 8 wires on the plug? I had a similar problem with the connector on the back of a Perkins 4-108 once.
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Old 10-07-2011, 10:55   #11
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Yep. The issue is Within the plug. Today the boat died again. I jiggled the plug and the power came back. I think I am going to terminal block the plug. Thanks for your help.
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Old 14-07-2011, 17:28   #12
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Okay
Still a problem. Now the plug is fixed but still no power. I am getting power to the fuse box. I traced and confirmed that the ground and 12v is good to the box shown in the attachment. No power past that though. Other thing I noticed is that there is one particular fuse that when I plug it in the power to the box goes down to 2 v. However I do not know where it hoes to. I attempted to just leave it out and see what works. Still nothing, no lights, gauges, etc... Any ideas?
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