Good morning! I tried my best to troubleshoot this one without posting since I've asked so much lately but I have hit another point of confusion.
I put a brand new headlight bulb (Philips 9003 -
http://ow.ly/bOmM30gbYge) into my bike about one month ago. After ~2 hours of riding time, the low beam was burned out. I switched to high beam and it burned out after ~30 minutes of riding time. I've checked and the bulb itself has charring around the prongs, but all of the wires and the socket is clean as a whistle.
So, WTF!
I did troubleshooting.
Voltmeter connected directly to battery12.7V with no key in
12.7V - 13.1V started up idle
8.6V - 14.4V revving around 2.5k to 3.0k RPM (my guess on RPM)
I think this seems OK and does not indicate a rectifier (or regulator?) problem
Voltmeter connected directly to the bulb socket, where I would plug the bulb inI am keeping one prong in the "GROUND" socket of the bulb socket, and then moving the other prong between the yellow/white wire sockets, which correlate with high beam and low beamOn the low beam, it is steadily between 12.7V - 14.5V .. revving, idle, etc.
On the high beam, it is 0V until I switch the high beam switch on (DUH). Once I switch the high beam on, it runs between 12.7V and 14.5V, even when I am revving.
Sometimes the high beam socket spikes to 16.0V - 19.1V when I am rolling OFF the throttle after a high revThat underlined part above is the only worry-some part, but I have just tried to replicate it with a warm bike and it's not budging from 13.7V.
Really bad online reviewsThis is my third solution, if the above high beam spike does not indicate some kind of problem... the bulbs I bought have terrible reviews, some people claiming a 2-week or 2-day bulb life. I have another bulb (pack of 2) that I'll put in right now and see how long it lasts.
I think my question is:
Does the spike to 19V on the high beam socket when rolling off the throttle indicate a voltage rectifier (or regulator?) issue?Thank you!
AJ