But for a typical LED with a supply voltage of 13.8 volts you'll need a 560 ohm 1/4 watt resistor. ![]() The value of the resistor you'll need depends on the supply voltage and the LED spec. (But don't go connecting it just yet)īefore you go connecting it you'll need a resistor. The correct way to connect an LED is shown in the photo below. And have to be connected the right way round. ![]() Unlike normal bulbs LED's have a positive connection and a negative connection. Well this guide will hopefully answer those questions and anymore you might have regarding LED's. A frequently asked question here at TM1 is how do i replace my signal meter bulb with an LED ? What kind of LED do i need and what size of resistor do i need ? Etc.
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