About 4-5 days ago I turned the key on to start the scooter and one of my headlights went dim. I thought it had burned out, so I ordered some spares. Well, I got the replacements yesterday, and put one in, but the same problem is there.
One side is a normal bright white, and the side looks a very dim, dark amber color. The high beam indicator on my gauges lit up as soon as the one light went dim, but switching between high beam and low beam doesn't make a difference.
Has anyone else experienced something like this that can give me a clue on where to look. I thought I would go out during lunch and trace the cable assembly all the way back to the battery to see anything looked obvious.
Last Edit: Aug 18, 2008 8:40:55 GMT -5 by csalopek
sounds like my first wife!...sorry j/k have you checked the lamp socket for dirt, water, corrosion, melting or any other deterioration? If there is no visible problem there I'd swap the wires around with another lamp to see the result. Eventually you'll narrow down the source of the problem. You might even try popping out the switch and disconnecting the wires there for a result. (bad switch?)
Do you have a multi-meter and are familiar with ohm's law? If so, the next step I would take in your case would be to check the resistance of the wires with one probe being on the wire before the socket and the other in the bulb side of the socket. Based on the fact that you found a loose wire on the turn signal it is highly likely that you will have other bad solder joints in the lighting wire harness. A cold solder joint on the socket can cause just a little resistance that dims the bulb.
If resistance checks show everything to be less than 1 ohm then the next check is voltage. Compare the voltage to the hot wire on your good headlight to the dim headlight (assuming that both lights are using the same type bulb, and you have eliminated that the bulb is the cause by swapping them with each other). If there is a difference in voltage a the socket, then start going back down the wire and find out why.
Any way, those are the fundamental steps to take. Be sure to post the results and the ultimate outcome once you fix the beast.
I tested everything with my multimeter like you said. The ohms on both side was less than 1 ohm. The voltage on both sides was around 10.11 volts.
I did notice something strange though. If I removed the bulb from the good side, then the bulb that normally doesn't light up all the way will go completely out and not light up at all. However, if I remove the bulb from the side that doesn't light up properly, the other bulb still lights up fine.
How is this possible because the voltage is the same going to both sides?
I should also note that the voltage was closer to 12.1 on the bad side when I had the bulb removed from the bad side and the bulb on the good side was in the socket.
Any other clues? Could it be a voltage regulator issue? Or should I replace the wiring harness for the headlights and DRLs?
I'm not familiar with the two bulb circuits on scooters, but based on what you are saying it sounds like your "bad" bulb side is relying on the ground from your "good" bulb side. Do you have a schematic for your wiring?
Post by unknownsoldier on Aug 10, 2008 17:17:59 GMT -5
This sounds like two lights that should be wired in parallel, acting as if they were wired in series, is there a common ground that could be faulty and two different input sources/values? Check voltage as described above by Dorian, then track the wires back by hand, being thorough, until you find the trouble spot. The harness could be mis-wired, so forget a schematic and go from the device (lite) to the source (battery), sometimes the ground circuit goes to the frame nearby, but sometimes it connects somehwere else. You will go through connectors and switches in the circuit (any relays?) too. A good multimeter is better than one that is too cheap and little.
I finally solved the mysterious problem with only one headlight working and the other one only partially working.
I called partsforscooters.com on the phone to inquire about the scooter headlight wiring harness they have for sale on the website. The woman I spoke to said she placed an order for these in Jan. 2007, so if you need one I would recommend just making your own because nobody seems to sell the wiring harness anywhere. They were selling the harness for $16.99, and I made a new one for less than $7.
I ordered some H4 25/25w bulbs from www.partsforscooters.com, bought 2 - H4/9003 connectors from Autozone, and created a brand new headlight wiring harness for the new H4 bulbs.
These bulbs are tremendously brighter than the stock 6235B (Philips 12718) push and turn bulbs that came on the scooter.
After resoldering the old wiring harness I never could find the problem with it, but it must be somewhere in one of the bulb socket housings. I say this because I reused most of the wiring and the 2 smaller DRL-type bulbs. All I did was cut the bulb sockets off where all the wires joined together, then I soldered the new connectors in place.
The only thing I forgot to do was string the new connector wires through the rubber protective cover for the backside of the bulbs. I can easily fix this though by pushing the connectors pins out and running them through the cover.
wereed: HOw can I start a thread?
Jun 1, 2013 10:55:49 GMT -5
wereed: or respond to a thread I started three years ago...
Jun 1, 2013 10:56:07 GMT -5
marklorenzi: I just bought one of the Fleetwoods. They look like a clone of the Honda XRM's they sell overseas. It is in transit now and I should get it this week. I will try to post my experience here. Call me the guinea pig hahaha.
Jun 2, 2013 20:29:11 GMT -5
flyangler: wereed, this forum is read only the new forum is on the banner above. Dan
Jun 5, 2013 7:35:29 GMT -5
silkyg1973: can someone please tell me how to post
Jun 10, 2013 12:08:46 GMT -5