1156/1157 Amperage?

Your auto parts stores have that information in the bulb catalogs if they know how to read. Check with NAPA first, I know they have it.

Damn, how did my answer get above your question??????????

 

Anyone know how many amps a single 1156 and/or 1157 bulb draws? I'm working on a shop wall project that will utilize one of these bulbs and need to know what size 115VAC/12VDC transformer to find. Thanks.

 

2 amps

http://www.truck-lite.com/webapp/wc...RegSpecsBulbSpecs.jsp&storeId=10001&langId=-1

 

I,m totally out of my depth here but just out of interest,is there a greater surge draw when you first turn something on.You get that on household stuff or is 12v d.c. different??

 

When i was having problems with my pressure type brake light switch I measured the current to the bulbs. Both brake lights drew 9 amps so I guess 4-1/2 amps on that filiment. Didn't measure the running light amps filiment.

Guess you could hook one up to a car battery and measure it.

 

The bulb will work fine on AC as long as it's the proper voltage.

A plain old 115/12 Volt transformer will do the job.

 

it all goes back to ohms law,research it,its the gospel in electricity

 

Okay, thanks. I should have looked it up on Google first. I found that an 1156 draws 2.1 volts. I am familiar with Ohm's law, Amps=volts divided by resistance, but that doesn't truly apply. I also know that watts are equal to volts divided by amps, but i still only know one variable.

Anyway, I am finding it hard to locate a 2amp 115VAC/12VDC transformer so I think I am going to look for a LED bulb that draws less power.

Thanks to all.

 

you can find all the 12v DC power supplies you'll ever need in a pile of old computers....yellow is +12v, black is ground. usually they're rated 5 to 10 amps at 12v

 

Note that Squirrel said "power supplies."

You can't transform DC.