my right turn signal is blinking extra fast right now, but all the bulbs are working. the problem is one bulb is not blinking when im signalling right, but it does light up. is it as simple as replacing that bulb?

 

Yepper.

 

Yes, mine did that also. Replaced the bulb & all is right!

 

Question is, how does it know its burnt out? Does it measure the voltage or resistance?

 

Filiment bulbs - measure resistance.
Close to zero ohms when the filiment is unlit and good.
Infinity ohms whan the filiment is burned out.
Sometimes you can just look and see the broken filiment.

 

What you need there caller is some turn signal fluid. Make sure you get the right color.

sorry, I couldn't resist.

 

"how does it know it's burnt out?"

There just comes a time in a bulbs career when blinking just isn't fulfilling anymore. Those closest to the bulb can usually see the signs. It becomes lethargic, distracted, irritable. That's when a bulb knows it's time to move on.

 

hahahaha!lol

 

This bulb needs to indicate a change in direction. Perhaps Dr. Phil can help.

 

LOL those poor bulbs… they have feelings too.

But seriously, I just put led bulbs for my front bumper lights and front bumper turn signal, and when my headlights are off, my blinker acts normal. If my headlights are on, it blinks really fast… wtf is up with it?