I run all of my leds with their own resistor. I have the leds on a seperate battery from everything else. Wiring is straight forward. I get all my leds pre-wired from hong kong with resistors on them already. Sure makes things easier. I make my own lenses and drill a 1/8" whole for the 3mm and 3/16 I think for the 5mm. I then use clear silicone to hold them in place. Hasn't failed me yet.