To determine the current-limiting resistor for an LED, you need to know its forward voltage (Vf) and desired current (I). Use Ohm’s Law (R = Vf / I) to calculate the resistor value. For a 5V supply and a standard 2V LED, a 150-ohm resistor (nearest standard value) would limit the current to around 20 mA, a common choice for LED applications.
Equation. R = V s − V led ∗N I led R = V s − V l e d ∗ N I l e d. Where: V s V s = Supply voltage. I led I l e d = LED current. The usual operating range of common 3 mm and 5 mm LEDs is 10-30 milliamps. If access to an LED's datasheet is impossible, 20 mA is a good guess. V led V l e d = LED voltage drop. The voltage drop on a LED

So connect that size resistor at each bulb housing, or divide the resistor Ohms value in half, double the Wattage, and connect one to each side. In the quoted numbers, V=14, and the resistor replaces one bulb at 21W, so you get 196 / 21 = 9.8 Ohms, >21W. The 10W value is a bit off, but that's possibly the nearest available value in a 10W

You may not even need load resistors to switch to LED lights. The best thing to do is to try the lights without load resistors first. No need to purchase something you may not need until you know need it. Load resistors such as # DI34ZR dissipate heat through the body of the resistor. Wrapping them with insulation would prevent them from
You need to calculate a new value for the 10k ohm resistor depending on the new LED. But I suspect that the value 10k isn't changing that much since LED have from 1,x to 3,x V forward voltage. And to have a 10k in series with a LED indicates that you have 220V as Vcc.
This is the reason why it’ll blink fast (hyper-flash). The fix is very simple – install a RESISTOR. This will make your buddy think that it has a bulb in good condition, so it will blink in a normal state. Because our technology is very open to improvements, there are now LEDs that have built-in resistors in it. . 49 188 142 397 48 362 352 117 29

do i need a resistor for led