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Old July 21st, 2013, 09:05 AM   #1
masterbeatty
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Default 99 cummins alternator upgrade

What are the options for a good reliable upgrade. I have dual electric fans, stereo, and lights at some point. The alt drops hard when the fans kick on.
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Old July 31st, 2013, 06:27 AM   #2
TheDodgeGuy
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You could try looking up places that sell better/larger alternators? I've been trying to find a bigger alt for my 360, but my half ton uses the same alternator as the cummins uses (as far as output numbers). I'll post up here if I find something.

You may want to look into setting up dual batteries if your not running them yet, no too hard to do.
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Old July 31st, 2013, 03:53 PM   #3
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Cummins has dual batts stock. I mean its manageable how it is but id like more juice eventually i want to add a winch
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Old July 31st, 2013, 04:18 PM   #4
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Have you tried to up the wire size from alternator to battery? It seemed to help my ol' dodge some when I was having issues with a drop in power from the grid heater.
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Old July 31st, 2013, 09:53 PM   #5
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yup all my wires are bigger. well huge haha.
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