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Unread 01-18-2014, 10:01 PM   #1
ronlunn
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LED lightbar / relay question

I am getting ready to mount a few LED light bars to my Jeep. Do LEDs draw a low enough amount of power to wire without relay, or do they require a relay in the installation? I am planning on running a relay for each one, but I wanted to make sure. The switches I am planning on using are all 30 amp.

Thanks!

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Unread 01-19-2014, 08:43 AM   #2
Indy
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Yes no maybe.

I want to move 30k pounds. Will an engine do that? Yes if its a big diesel, no if its a lawnmower engine, maybe without any more info.

So long way of saying, how many amps are the led's youre using draw?
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Unread 01-20-2014, 05:54 PM   #3
ronlunn
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Good point - it is a 120W bar so I believe that means it will draw about 10 amps.
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Unread 01-20-2014, 08:29 PM   #4
Demp
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Quote:
Originally Posted by ronlunn View Post
Good point - it is a 120W bar so I believe that means it will draw about 10 amps.
The math is correct, considering 12v. They may be 120W at 14v but that would lower current, better on the safe side.

You could run 10a through a 30a switch, I would use relays just out of habit.
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