Do I need a larger alternator to run off road lights? - Page 2 - JeepForum.com
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post #16 of 22 Old 09-21-2013, 04:15 PM
nutters
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We have three lights on a bumper bar and five on a roof bar. Will we need a bigger battery or another alternater? I have a 2013 JK Wrangler Sport with 3.6 L V6 24-Valve VVT engine. I don't know what other info yall might need as I'm asking for my husband. I have a 600 Amp Maintenance free battery. The lights are Rugged Ridge 100w. Any help would be greatly appreciated. (I didn't know if I could post on this one or if I should create a new thread)

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post #17 of 22 Old 09-24-2013, 08:07 PM
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800W at 12V (worst case) will yield a 66.66 A load (56A normal). If you plan on running them all at the same time when the engine running you should upgrade the altinator and the power and ground wires at the battery and altinator.

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post #18 of 22 Old 09-24-2013, 09:46 PM
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Where are you getting 800w? He's running 260w in lights, with a low output of 14v while running he's burning 18ish amps. Stock alt will handle that additional load easily. But you should be running that load through a relay and not just the switch, which odds are you are doing.

But anyways an over drain is easy to see, everything will gradually dim, the jeep wont just die and leave the lighs running.

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post #19 of 22 Old 09-24-2013, 09:49 PM
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Ah nevermind. Why in the world does every newbie ressurect decades old threads?

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post #20 of 22 Old 09-25-2013, 07:41 PM
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Quote:
Originally Posted by Indy View Post
Where are you getting 800w? He's running 260w in lights, with a low output of 14v while running he's burning 18ish amps. Stock alt will handle that additional load easily. But you should be running that load through a relay and not just the switch, which odds are you are doing.

But anyways an over drain is easy to see, everything will gradually dim, the jeep wont just die and leave the lighs running.
I don't know? He has eight 100W lights added and worst case a 12v battery.

Also the thread is from Jan 31 2012. Hardly close to decades old.

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post #21 of 22 Old 09-25-2013, 07:45 PM
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Originally Posted by Indy View Post
Ah nevermind. Why in the world does every newbie ressurect decades old threads?
What does it matter. At least they used the search function. Thread still has relevance to them.

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post #22 of 22 Old 09-27-2013, 05:18 PM
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Quote:
Originally Posted by sjones26573 View Post
if hooked up properly, correct.
+2

Edit:
didn't see second page >_< might help to check that out next time..
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