40" and 30" light bar on switch #1?

[The Car Stereo Company]

the output from a vehicles alternator should never drop below 14 volts when it is running.

 

[Nick@Apollo-Optics]

the output from a vehicles alternator should never drop below 14 volts when it is running.

Gotcha. Great news. So to be safe should I use 13.8 volts when calculating amp draw or is 14.4 going to be safe? I ask because I want to run a 5 watt 40" bar on Aux 1.

 

[BigBOSS]

Gotcha. Great news. So to be safe should I use 13.8 volts when calculating amp draw or is 14.4 going to be safe? I ask because I want to run a 5 watt 40" bar on Aux 1.

13.8 in the equation just gives you more room for error so if it's below the rated amps for aux1 you'd be fine

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---------- Post added at 12:30 PM ---------- Previous post was at 12:26 PM ----------

I just like a buffer so as to not accidentally fry something. Or like I said earlier, just use a relay if it's close.

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[Nick@Apollo-Optics]

Well 400/13.8 is 28.9 amps, so it sounds like I'd be good to go.

 

[BigBOSS]

Well 400/13.8 is 28.9 amps, so it sounds like I'd be good to go.

Shouldn't be a problem.

 

[Nick@Apollo-Optics]

Sweet! Thanks fellas.

 

[The Car Stereo Company]

unless turn on power exceeds that.

 

[Nick@Apollo-Optics]

Would it exceed that with LEDs?

 

[knine]

Sleep easy at night. Run it on a relay.

 

[Nick@Apollo-Optics]

So by run it on a relay, you mean use a separate switch? Or run a positive wire from the relay and tie that wire into the Aux 1 switch?