12DCV to 2DCV??? Car Battery to +220 3mm LEDs

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Thread Starter


Joined Dec 30, 2012
Ok heres the dilema, i have over 220 3mm leds in the rear reflector of my car spelling "ECLIPSE", each are rated @ 2.1v & 20mA. I'm going to be running them with a relay from my marker lights, to reduce the voltage, would i need 2v .5a Zener Diodes? The leds are all in parallel, totalling 4.4a draw. So i would need 9 .5a 2v Zeners in parallel from the source? Zeners are very cheap (25 for $.99) and i bought the leds (1100 for $15)


Joined Apr 5, 2008

I am closing this thread as it violates AAC policy and/or safety issues.

6. Restricted topics. The following topics are regularly raised however are considered “off-topic” at all times and will results in Your thread being closed without question:

  • Any kind of over-unity devices and systems
  • Automotive modifications
  • Devices designed to electrocute or shock another person
  • LEDs to mains
  • Phone jammers
  • Rail guns and high-energy projectile devices
  • Transformer-less power supplies
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