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Old 05-05-2008
Tyler James's Avatar
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Join Date: May 2008
Location: Fort Irwin, Cali
Posts: 88
need help with an alternator

how many amps should i have for my altinator if im going to be running 6 lights.

anybody knows. please help
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Old 05-05-2008
WowMike2001's Avatar
Join Date: Oct 2007
Location: Stevenson, WA
Posts: 2,583
Go for a 200 if your looking for a high output.. that, or run a dual battery setup if you plan on running them without the truck running at all. make sure you absolutely upgrade the existing wiring to a high gauge, possibly a 2 if you want to make sure its heavy.. including the grounding cable.

Similar to this.. not sure if it will work for you or not, check the compatability under there

There you go =)
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Old 05-05-2008
mossyoak03's Avatar
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it might benefit you alot more if you post your question in the right section
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Old 05-05-2008
Machine090767's Avatar
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hear, hear !
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Old 05-08-2008
Trigger01's Avatar
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I'd go with a 200 amp alt. Welcome to RF.
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Old 05-09-2008
lifted97ranger's Avatar
Join Date: Nov 2005
Location: Charlestown, IN
Posts: 1
Dual batteries will do nothing for drawing excess amps the alternator isn't making. One thing to remember about the high amp alternators is at idle they are only making about 140A.

You need to figure out what the amp draw is for your lights. Then add that to your stock alternator output and get the next largest alternator. With that many lights, I would go with a 200A alternator.
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Old 05-10-2008
Rangerguy's Avatar
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Location: California
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Welcome to R-F!
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Old 05-10-2008
Bentley's Avatar
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Location: Billings MT
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welcome to the site.
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