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Message: <blockquote data-quote="TitanRev" data-source="post: 1064344367" data-attributes="member: 10047">Let me help you a bit here la since I've done my own DIY LED 3rd brake light No.1 you need to find out belowVs = 12V DCLED Fv Normal red ones are 1.9 to 2.1VHigh Output about 3 to 4VmA you intend to supply to the LED 15mA or 20mA higher the brighter but I will put 20mA the max to preserve the life span of the LEDHow many LED you want to put in the strip. Only then you calculate the resistor you need to use. If say you calculated the Ohm to be around 566 or 745 Ohm get the higher than the ones you calculated. 566 you get 600 Ohm 745 you get close to 800Ohm. Also do look into the Watts of the resistor 2Watts is enough for meMy suggestion is that you do all the drawings and calculating on papers 1st before moving to actual project. This is how I do it. You also need to take into consideration the wiring of the multiple LEDs. If wiring multiple LED best to use parallel because if 1 burn others will still light up. If use Series, 1 burn the whole line of LEDs will not light up. In the below pictures, you will see I'm using parallel series for the entire circuits and I use minis series circuit for each group so if shit happens only 1 group of the LEDs won't light up the rest will still continue to light up. If I wire all in series, it will draw more current from the source and heats up the wiring because of more current flows. Parallel on the other hand will make all the LED take the same voltage after the resistor and current is spread evenly across all LEDs. This also depends on the individual LED tolerance to voltage variance. For Knight Rider, not that complicated if you know how to do it. Just go get a running light module and hook it up. My previous DIY 1st draw out a plan of attack and calculate<a href="http://s6.photobucket.com/user/TitanRev/media/527453_4924424833594_488380943_n.jpg.html" target="_blank"><img src="http://i6.photobucket.com/albums/y228/TitanRev/527453_4924424833594_488380943_n.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a>2nd fabrication phase<a href="http://s6.photobucket.com/user/TitanRev/media/387798_4955224403564_308976488_n.jpg.html" target="_blank"><img src="http://i6.photobucket.com/albums/y228/TitanRev/387798_4955224403564_308976488_n.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a>3rd testing and assembling<a href="http://s6.photobucket.com/user/TitanRev/media/406847_4960286450112_440693137_n.jpg.html" target="_blank"><img src="http://i6.photobucket.com/albums/y228/TitanRev/406847_4960286450112_440693137_n.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></blockquote>

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