Amps drawn from headlights

[Nismo280zEd]

Does anybody kknow how many amps the headlights use ? i think it was 30 but i can't remember... i have to buy new connectors and need to know which one to buy based on how many amps it can handle.

-Ed

btw... I'm talking about Halogen headlights.

[blueovalz]

I believe the OEM headlights are 55 watt on high beam, which, if divided by 12 (volts) give the amps drawn per lamp, which is not much. If you upgrade to a higher wattage lamp, simply do the same thing again for each lamp's amp draw and then multiply times two for the "set".

[Nismo280zEd]

so amps is equal to watts divided by current?

 

if this is so... how do i figure out the amount of watts for a 12v cooling fan so that i can figure out the proper amperage for it?

I can't remember my formulas.. that was 3 years ago for me.

-Ed

[TomoHawk]

There's a basic electronic formula you can use:

 

P= I * V Power = Current * volts

P= watts

I = amps

V = volts

 

You can solve for any variable:

 

I=P/V

V=P/I

 

for lights, you know the voltage and the wattage.

 

for an example, a 12V, 55W lamp:

 

A=55/12 ~ 4.5Amps

 

ifyou had a 30AMP light,

P=30 * 12 = 360 watts.

[Guest greimann]

so amps is equal to watts divided by current?

 

.....

-Ed

 

No. Amps and current are the same thing. amps = watts / voltage.

 

The actual formula is P= I V , and algebraic variations thereof.

where:

P = Watts

I = current (amps)

V = Voltage

 

If the cooling fan in question is rated in watts, then divide watts by 12 to get amps.

 

See this link for more info on DC power: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elepow.html#c1