Wiring Multiple LEDs with SPST Switches

mjrodg3n88OGR Forum Member

I'm thinking of adding LEDs to the headlights and tail lights of some of my vehicles. I know that is common practice on here, so I've searched for my answers, but haven't found them (or maybe just didn't understand). Anyway, my plan is to use a 12VDC power supply and have each vehicle on it's on toggle so I can turn each one on and off. My issue is that I do not understand resistors and what not that is needed to make this work. I've found the calculators on here and helpful information, but still can't grasp it.

What will I need in addition to what is shown in my attached image? (Or is this even correct??)

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3/22/192:47 PM

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