I have a headlight with two bulbs that takes two D size batteries.There is also a horn inside the headlight.A wire was broken inside the light when I got it. The light had sat, on a bike , stored inside for a few years when I got the bike. There had been no batteries in it during storage so it was not corroded inside.I have replaced the bulbs and put in fresh batteries after reconnecting the broken wire.It still will not burn.All the internal parts look good, but still no luck.Any suggestions? Thanks.
my headlight won't light
- Thread starter thom
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The batteries might not go both the same way.
Thanks, you're right the batteries go opposite ways. That is indicated by pictures on the part the batteries go in and the springs that fit against the flat end of the batteries are on opposite ends.The problem may be something simple , but it's not the batteries being in wrong. 
Maybe the switch needs a little cleaning. Get an emory board like they use to do fingernails and hit both sides of the contacts with it. It probably wouldn't hurt to hit all the points of contact...bulb socket, bulb base, where the batteries make contact. Also, test those batteries in a flashlight and make sure they are good. Gary
You could always convert it over to LED if you can't fix it. I recently gave up on an old "vintage" light that I desperately wanted to keep original but couldn't figure out what was wrong. Now I couldn't be more pleased with the outcome of the LEDs and they are way brighter than an old single or double bulb. I know there's a link on here on ways to do it but my conversion was even easier, due to newer and more varied options in LED lights.
Go to Home Depot or equivalent and buy the new LED light that's supposed to attach to a brim on a baseball cap. It has 5 LED bulbs all running side by side, runs on a single lithium battery and the switch is on the side. I used a Dremel tool to cut a rectangle in the shiny, thin aluminum reflector plate, folded back the metal for something to glue to, stuck the light through it until it pressed up against the glass, glued it with some Gorilla Glue (being careful not to glue the switch), tore out all the heavy guts from the inside of the globe I didn't need anymore and it's done. When I want to turn it on, I open the case (it's hinged on the side), flick the switch, close it, and ride. All for less than a 5... 5 dollar.... 5 dollar foot long! Sorry. :mrgreen:
Go to Home Depot or equivalent and buy the new LED light that's supposed to attach to a brim on a baseball cap. It has 5 LED bulbs all running side by side, runs on a single lithium battery and the switch is on the side. I used a Dremel tool to cut a rectangle in the shiny, thin aluminum reflector plate, folded back the metal for something to glue to, stuck the light through it until it pressed up against the glass, glued it with some Gorilla Glue (being careful not to glue the switch), tore out all the heavy guts from the inside of the globe I didn't need anymore and it's done. When I want to turn it on, I open the case (it's hinged on the side), flick the switch, close it, and ride. All for less than a 5... 5 dollar.... 5 dollar foot long! Sorry. :mrgreen:
its either
dead batt's (you wouldn't believe how many times i've purchased batt's that dont work)
or
broken bulbs/improper bulbs
or
broken wire (replace them all (if it was broken, chances are it could be broken inside the protective sleeve where ya cant see the break)
or poor connection.
work through them one at a time. it has to be one of the above problems.
can we get some pic's? did you purchase the correct voltage of bulb (3 volts)
dead batt's (you wouldn't believe how many times i've purchased batt's that dont work)
or
broken bulbs/improper bulbs
or
broken wire (replace them all (if it was broken, chances are it could be broken inside the protective sleeve where ya cant see the break)
or poor connection.
work through them one at a time. it has to be one of the above problems.
can we get some pic's? did you purchase the correct voltage of bulb (3 volts)
