| Author | Message | ||
     Cataract2 |
So, I have to swap my rear stock turn signals out to slightly smaller LED ones to fit with my side bags. I went with an aftermarket pair of LED ones, but find they blink fast. This tells me I need a resistor put in there. I was wondering if anyone else has kept the stock front ones and replaced just the rear. What size resistor did you go with? My LED rears are rated at 1-3W (Average 2W) | ||
| Dhays1775 |
do they only blink fast when the bike isn't running? if i'm not mistaken, the flasher relay is built into the instrument cluster. once you fire up the bike and have extra voltage flowing, your blinkers will flash at the normal rate. try the flashers with your bike on and running. mine flashes fast when not running. hope it helps. | ||
| Dktechguy112 |
The blinkers flash flash fast when the IC detects an abnormal current. The voltage is fixed. LEDs have low resistance, if you swapped in LED turn signals, you lowered the resistance. V=IR Therefore, you need to increase the resistance of the new turn signals. If you have a multimeter, measure the resistance across the stock turn signals, then measure the resistance across the LED turn signals. Add a resistor in series with a value of the difference between the OEM and LEd turn signals. NOTE: most resistors are lower power, power=V*I, so make sure the resistor you choose is rated for your application. | ||
| Pgh_biker |
You are on the right track except that the LED's have high resistance and the IC detects a low current draw thinking that one is burned out. You need to add resistance in parallel to the turn signal to draw more current. Go to the auto parts store. They sell load resisters to put in parallel to the LED's to make them blink at the proper rate. Just be careful because you won't know if they fail to work cause your blink rate won't change. | ||
| Ratbuell |
LED's are low resistance. Darn near zero, actually, at least on their own without supporting circuitry. They have no filament. Neither does a burned out bulb. A good bulb, has resistance because there's a filament. You're adding resistance to the circuit because the LED doesn't add it itself. |
