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12-15-2020, 03:27 PM
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#1
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Junior Member
Join Date: Oct 2020
Location: NAPERVILLE
Posts: 11
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Ram 3500 Dual Alternator?
Hello Experts!
You've all been so incredibly helpful with the various questions I've posted and your real world advice. We've settled on the Eagle 321RSTS.
We're buying a Ram 3500 to tow it, and will be ordering the Ram after the Holidays. I'm getting the 6.7L Cummins turbo diesel.
Question is with the dual 220 alternators. It's not much more money. Are the dual alternators a good idea or overkill? I will only be connecting the Eagle to this Ram, not other accessories. If it's helpful, I'll get the dual alternators. If not, I won't.
The issue is the Ram salespeople don't know much, and the trailer folks say "ask the forums." So here I am again! Thanks so much-
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12-15-2020, 03:34 PM
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#2
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Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
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Our F350 has a single alternator and hasn’t had any issues. I wouldn’t expect a trailer (5th) to add much of a load.
__________________
Cheers,
T_
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks
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12-15-2020, 03:51 PM
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#3
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Senior Member
Join Date: Nov 2016
Location: Port Huron, Mi
Posts: 1,737
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I got a 99 5.9 Cummins and it has a single 130A or maybe a 150A alternator in it, cant remember. In the winter when the intake heaters kick on, after it's already running, they out a beating on that poor alternator. I watch the battery gauge just drop. Now I'm sure 20 years later they would have improved on that, but it would be nice to have duals.
My 15 Duramax doesnt have duals, but it sits in a heated garage for the winter. Lol
__________________
2017 North Point 375BHFS
2015 Silverado 3500HD Crew Dually Dmax 4x4
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12-15-2020, 04:09 PM
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#4
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Site Team
Join Date: May 2017
Location: Connellsville
Posts: 22,721
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That dual alternator setup would be most applicable for someone running high draw electrical accessories, winch, snowplow/spreader, etc. Unless you are thinking about running something similar off of that truck, I don't think you would ever need the dual alternators for simply towing.
The other thing to consider would be the availability of the of a replacement belt if you were to need one along the road. It may best to carry a spare with you. I don't think that the one for the dual alternators would be easy to find at your local parts store.
__________________
Moderator
2017 Jay Feather 7 22BHM Baja/Andersen WD
2018 F150 4x4 3.5L Ecoboost Max Tow
2015 MB Sprinter 2500 Passenger 2.1L Diesel
2007 Ram 2500 4x4 Cummins 5.9L G56
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12-15-2020, 04:19 PM
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#5
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Senior Member
Join Date: Feb 2019
Location: Schertz
Posts: 1,019
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You have two batteries on the Ram. Not sure why you would have a need for two alternators. Ours has done fine for almost three years with no problems.
__________________
2018 Ram 3500 CC Longhorn LB SRW w/timbrens
2019 Jayco Eagle 355MBQS
Pullrite 2600 Superlite
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12-15-2020, 05:03 PM
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#6
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Senior Member
Join Date: Jan 2015
Location: DFW
Posts: 3,493
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I have the dual alternators on my '16 Ram 3500...you don't need them! UNLESS you boondock! If you boondock, then you can wire a direct charge cable (from the TV battery, directly back to the RV batteries to charge) such as Redarc DC to DC battery charger.
__________________
Dan
'24 GMC 2500 AT4X AEV Edition
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12-15-2020, 09:45 PM
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#7
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Senior Member
Join Date: Sep 2015
Location: Mexico Beach
Posts: 2,196
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It is a cheap option, why not get it. My HO in cold weather hardly dims the lights when the grid heater runs. As a bonus if one fails u got a back up.
__________________
2024 Greyhawk 30Z
2023 Jeep Gladiator High Altitude Toad
2019 Ram 3500. Traded
2016 Pinnacle FBTS Traded
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12-16-2020, 01:27 AM
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#8
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Senior Member
Join Date: Nov 2015
Location: Lakewood, WA.
Posts: 4,540
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I started to get one with two alternators and like it have been said unless you are planning on getting a snowplow/spreader you would need it but hey if it don't cost that much more money and if the other option that you want are their I would say go for it.
__________________
2023 Jayco North Point 310RLTS
2022 GMC Denali Ultimate DRW
Retired Army MSG
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12-16-2020, 10:29 AM
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#9
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Senior Member
Join Date: Apr 2018
Location: Natalbany Creek Campground, Amite City, LA
Posts: 3,244
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I found that most 3500's, unless you order one, come with the dual alternators. I bought two new 3500's in the past 3 years from dealer stock and both had dual alternators. If I ordered one I would opt for the dual alternators..........can't have too much when towing 17,000 pounds. For sure go with the High Output diesel with the Aisin tranny.
__________________
AL & JANET KRUEBBE
2019 PINNACLE 37RLWS
2018 NORTH POINT 315RLTS (TRADED)
2017 RAM 3500 DRW DIESEL/AISIN 4.10 AIR BAGS
B&W COMPANION TURN OVER BALL HITCH
Formerly from Sequim, WA
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12-16-2020, 11:49 AM
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#10
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Senior Member
Join Date: Sep 2013
Location: South Texas
Posts: 7,216
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My 2015 2500 gasser came with 2 alternators (Tradesman package). The 2nd alt was part of another option group.
If you have to pay extra JUST for the alternator, maybe skip it. But chances are it will come with an option group you DO want. In that case, keep it of course.
As for the belt, dual alternators on HD trucks are common enough, I bet you don't have a problem finding one "in the wild". They're going to be used on all manner of fleet vehicles, and parts stores support those fleets. But keeping an extra on-hand is good, cheap insurance against getting stranded.
I kind of liked the fact that I had dual alternators, even though I never got the chance to "upfit" many electrical accessories on that truck, the power was there if I ever needed it. And IMO, it's better to have it and not need it than the other way. If you're going to keep the truck a while, you never know when you'll want to add something...
__________________
-2018 Greyhawk 29MV
-2020 Jeep Wrangler Unlimited (JLU) (Primary Toad)
-1994 Jeep Wrangler YJ (Secondary Toad)
-2014 Jay Flight 28BHBE & Ram 2500 6.4L CC 4x4 (sold)
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12-16-2020, 01:27 PM
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#11
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Junior Member
Join Date: Oct 2020
Location: NAPERVILLE
Posts: 11
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thanks! I agree with you
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12-16-2020, 01:28 PM
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#12
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Junior Member
Join Date: Oct 2020
Location: NAPERVILLE
Posts: 11
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Thanks! I'm leaning towards getting the dual.
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