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alterator on 454 mag help

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Old 01-30-2014, 04:34 PM
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Default alterator on 454 mag help

Trying to get some ideas the alternator keeps not charging replaced 2 alt works great for 5min to 5 hrs with do issue then it stops charging. last fall it stopped working then 2 min before I was putting it on the trailer it started charging again. I have look at the wires nothing looks bad only thing I can think of is a connector. Any other thoughts?
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Old 01-30-2014, 09:25 PM
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Check the exciter wires. You need 12v at the purple wire for the alternator to charge. Could be corrosion in those bullet connectors
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Old 01-31-2014, 01:01 PM
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will do
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Old 04-14-2014, 05:39 PM
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Any updates? I am also having issues with charging on my 1994 Baja 260. I just bought 3 Deka Group 31 AGM cells this season and took the boat out yesterday and at low idle it wanted to die all of a sudden and then could barely turn over. I switched the perko over to share the battery input to be able to start again. I have a feeling something is wrong with the alternator. I have thoughts on buying a MeanGreen high output what are your thoughts?
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Old 04-14-2014, 05:54 PM
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Originally Posted by crisistc
Any updates? I am also having issues with charging on my 1994 Baja 260. I just bought 3 Deka Group 31 AGM cells this season and took the boat out yesterday and at low idle it wanted to die all of a sudden and then could barely turn over. I switched the perko over to share the battery input to be able to start again. I have a feeling something is wrong with the alternator. I have thoughts on buying a MeanGreen high output what are your thoughts?
check your battery cabels for corrosian where the terminals hook to the wire,i have seen that cause problems.
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Old 04-17-2014, 10:36 PM
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Battery cables are new. Seems to me the alternator has failed after 20 years in the boat. I have ordered a WEI 120 Amp alternator to replace it.
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