Chinese Scooter Club Forum Index

Home | Forum | Arcade

Headlight bulb blowing - fix

 
Post new topic   Reply to topic    Chinese Scooter Club Forum Index -> Body and Electrical Workshop
View previous topic :: View next topic  
Author Message
Carloscooter



Joined: 12 Jan 2008
Posts: 1
Karma: +1


PostPosted: Sat Jan 12, 2008 11:07 pm    Post subject: Headlight bulb blowing - fix Reply with quote

Hi all. My headlight bulb kept blowing on my new BT49QT9 and it drove me mad. After reading all of the forums none offered any help and the best culprit was the voltage regulator. I changed it and still blew the bulb. I investigated further and measured the voltage at the headlight. Using the meter on DC the voltage showed -0.4V but when I put it on AC it showed 24V on tickover and 70V revved up. No wonder the bulbs blew. After inspecting the wiring diagram, the headlight bulb is wired directly off one coil of the AC generator. I bought an RG12 AC regulator from BB Bikeshop and fitted it between the blue and white wire which goes from the right hand headlight switch to the main beam switch, and earth. No more problems and a steady 12V at the headlight. Why it came like that from the factory I don't know but now I have two voltage regulators fitted. Cool eh?


Back to top
View user's profile Send private message
px166bajaj
Moderator


Joined: 09 Oct 2006
Posts: 9344
Karma: +85

Location: Sevenoaks Kent (Er, that's UK!)

PostPosted: Sat Jan 12, 2008 11:27 pm    Post subject: Reply with quote

Useful stuff. As it was a copy of this post, I have removed the other post you put into "Hints and Tips" Electrical is the place for this. I'll sticky it.



_________________

A dealer will say anything to get your money!
Back to top
View user's profile Send private message
Fox



Joined: 05 Jan 2007
Posts: 7443
Karma: -301

Location: Los Angeles

PostPosted: Sun Jan 13, 2008 12:35 am    Post subject: Reply with quote

I have two bulbs on my scoot, and one of the low beams burns out every time I replace it, it burns out on the left side only. The other bulb has lasted for two years. Both high beams work fine. Am I getting a power surge on 1 side only?

I stopped replacing it a year ago and I am content to run with only 1 light on and have both come on for high beam, but that doesn't make me less curious as to why it pops on one side only.


Back to top
View user's profile Send private message
NoBike



Joined: 27 Feb 2007
Posts: 3267
Karma: +48

Location: Lancashire, UK

PostPosted: Sun Jan 13, 2008 12:19 pm    Post subject: Reply with quote

A bit too complicated for me.



_________________
Back to top
View user's profile Send private message
px166bajaj
Moderator


Joined: 09 Oct 2006
Posts: 9344
Karma: +85

Location: Sevenoaks Kent (Er, that's UK!)

PostPosted: Sun Jan 13, 2008 1:31 pm    Post subject: Reply with quote

Fox wrote:
I have two bulbs on my scoot, and one of the low beams burns out every time I replace it, it burns out on the left side only. The other bulb has lasted for two years. Both high beams work fine. Am I getting a power surge on 1 side only?

I stopped replacing it a year ago and I am content to run with only 1 light on and have both come on for high beam, but that doesn't make me less curious as to why it pops on one side only.


Sounds like a dodgy earth on that bulb holder to me. I expect you've tried cleaning the contacts in the bottom of the holder? Maybe theres a dirty spade connector at the back of it?



_________________

A dealer will say anything to get your money!
Back to top
View user's profile Send private message
martinwill



Joined: 21 Mar 2009
Posts: 7
Karma: 0


PostPosted: Mon Mar 30, 2009 7:04 am    Post subject: Reply with quote

Hi, on the rg12 regulator there are two wires, one yellow and one black, does the black wire go to earth and the yellow wire to the blue and white on the bike ?


Back to top
View user's profile Send private message
panther



Joined: 16 Apr 2011
Posts: 33
Karma: 0

Location: hilliard ohio

PostPosted: Tue Apr 19, 2011 12:14 am    Post subject: head light bulbs Reply with quote

Hey ya'll from panther I'm new to this scooter thing I have a 08 jmstar HL50QT-4 scooter. I went to replace the HL bulbs and so far I can't find the right one without ordering on on line.It call's for a 12v35/35 and I have 2 12v5w bulbs on the side of this. One of my questions is will the 12v35 just run without the other bulbs or do I need all of them.Today I picked up a 12v24/24 and 2 13.5/5w when I put in the bulbs and turned on the switch nothing so I started it , and the main bulb flashed and the 2 sm ones were burning very bright then started to smoke so I truned off asap and removed these. so I tryed my last 12v/24/24 bulb with the old small bulbs and again the bulb flashed and then nothing. I just want to get the right bulb so I don't melt anything lol. Please help also the 12v24 bulb was not the halogen bulb that came with it so I'm kind of lost here,Some one was saying I need to test th voltage comming in on the headlight but ???? I don't know how to do this,If I could just get the thing runnung with just the main light then thats all I need any ideas???? thanks again Panther any help will be great.


Back to top
View user's profile Send private message
banusz.andras



Joined: 13 Jun 2011
Posts: 89
Karma: +1

Location: Hungary

PostPosted: Fri Jul 08, 2011 7:22 am    Post subject: Reply with quote

Hi guys. I have the same problem: my headlight bulb burns out in under a minute. I have measuerd the voltage right at the bulb's socket, and it doesn't go beyond 13.5V AC, not even at higher rpms, so the regulator works fine.

Oiginal chinese bulb worked for years, the replacement bulbs last for about one minute, and then go out, leaving a blue / yellow fog inside the glass Smile

Bulb is the same, 12V 35 / 35, looks the same too, only difference is that the original chinese bulb has a light diverting shield inside the glass, the new bulbs don't, just the two coils.

What could be the problem?
Is it possible, that the original bulb is not halogen type, but the replacement is (I know it is), and the headlight housing doesn't have ventillation and the bulb overheats?



_________________
2006 Zxmco ZX50QT-7
Back to top
View user's profile Send private message
banusz.andras



Joined: 13 Jun 2011
Posts: 89
Karma: +1

Location: Hungary

PostPosted: Sat Jul 09, 2011 10:25 am    Post subject: Reply with quote

Got a non-halogen bulb, seems like that was the problem. The halogen bulb overheated rapidly and without a cooling breeze it exploded Smile



_________________
2006 Zxmco ZX50QT-7
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Chinese Scooter Club Forum Index -> Body and Electrical Workshop All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2002 phpBB Group
Theme created by Vjacheslav Trushkin
Effex-Media Web Resources

Scooters | Scooter Insurance | Moped Insurance | Direct Bikes | Direct Bikes Reviews


Free Forum Free Top Site List
Make this Forum Ad-Free




31695208