Headlight Bulb Burning Out

I have a 2004 Yamaha Blaster

Ok so this past Friday I installed an LED tail light because it didn't have a tail light when I bought the blaster. The tail light that I bought from ebay has 3 leads that I connected directly to the 3 leads that would have been connected to the stock taillight.

I rode around all day saturday and all day sunday I think I had the headlight on most of the time. Then Monday night I was out riding and all of a sudden the headlight blew out so I switched to high beams and it again burnt out within 5 seconds. So I just decided to put a new headlight bulb in and it blew out right away. I did some reasearch on this forum and found that its usually the voltage regulator that goes bad when your headlights keep burning out. I measured the voltage between the green and black wire and the yellow and black wire at the headlight and got about 1.8-1.9v when I reved it up.

Do you think by installing the LED taillight, I may have fried the voltage regulator? And this is why my headlights keep blowing?

Also I see that people find voltage regulators for 5-15$. Where can I find a regulator for that kind of price?

Here is the part I bought on ebay


Thank you,
Ricky

I just checked the voltage again with the LED tail light unplugged and I got around 1.8V again. Which makes no sense because it seemed like the headlight bulb got really bright and then made a blue flash and went dark (like it was getting too much voltage). I'm not sure of the wattage of the taillight, it doesn't seem to say on it anywhere.

Ricky

WAIT A SECOND?!

Am I supposed to be checking the voltage on the headlight wires with AC or DC voltage on the meter? Because when I check the voltage with the AC setting on the meter I get 8.8-9.0V at idle and 16-16.3V ish when I rev it up.

I think the stator puts out AC?

Ricky

Blaaster said:

AC voltage is what you will get, and if it is over 14 volts the reg is faulty.

Click to expand...

Ok so then the voltage reg is faulty because I get about 16 volts AC when I rev it up. I guess I was being a dummy testing it on DC voltage