In other words, the tiny LEDs that I will be using for turn signal and high beam indicators may well need a 200 to 500 ohm resistor to survive. That is, unless they already have a resistance built into them. And, if so, how do I tell if the do have that resistance. For sure my supplier wont know. Why do places like Yogi's or Yearwood sell these lights without some sort of information. I am well aware of the fact that my LED turn signal light bulbs need a resistor to operate the flasher and my Pontiac style tailights have a built in board to operate 30-40 LEDs, but I'm a lowly nut-and-bolt ME, not a EE that plays with unseeable and nebulous volts and amps. Sheesh