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05-09-2021, 04:45 PM #15000 RPM
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2.5 175hp big charging system question
Hey folks. I'm new to the Merc world.
My 2.5 has 2 rectifiers.
When I hooked up my tach (grey wire) I had no signal, so switched it to the other rectifier. I now have tach.
I'm getting 14 volts charging.
Is this normal or is only one of them working?
(Motor runs perfect)
ThanksLast edited by DieselDood; 05-11-2021 at 10:02 AM.
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05-09-2021, 05:45 PM #25000 RPM
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You need to get somebody else’s opinion, but I would think the one that you hooked it to and the tack did not work is bad.
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rgsauger, Smalltownbassin liked this post
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05-09-2021, 11:58 PM #3
What year motor?
1990 Shadow bass boat w/ 2.4 200 Merc. Totally resto'd boat and love it!
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05-10-2021, 12:24 AM #45000 RPM
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I believe 1996.
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05-10-2021, 07:03 AM #5
14V is normal but if the tach doesn't work on one regulator, its bad. Better off to change them both out.
"The character of a man can be easily judged by how he treats those who can do nothing for him"
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DieselDood liked this post
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05-10-2021, 07:25 AM #6
cut tha "bullet" connectors off, solder and heat shrink tha connections on 2 new reg/rect's....
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Smalltownbassin, DieselDood liked this post
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