October 6, 2005I have a 1975 Ford F100. A few days ago I replaced the flasher bulb on the front right hand side. The flaser works correctly when I activate the turn signal. For some reason, though, the flaser indicater comes on and stays on when I trun on the head lights. The turn signal still works correctly. Also, the light buld does not come on when I turn on the headlights, but it works when I activate the turn signal. Anyone have an idea what is up?
Forums : General Discussions : Turn signal light (274 Views)
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October 6, 2005The bulb could be defective, the bulb socket could be bad or it could be the wrong bulb.
Double check the part number on the bulb.
Try this, take the bulb from the other side and try it in the side that doesn't work. If it starts working then you know it's a problem with the bulb. If it still doesn't work then there's a problem with the socket.
Some times the socket will get corroded and not allow a good contact. Try cleaning the inside of the socket with steel wool, or a small fine wire brush. If that still doesn't work you can replace the socket. Most auto parts stores will sell replacement sockets..
If you know how to use a test light then you can check the contact points inside of the socket to make sure that there is power going to the socket when the lights are on. Turn on the signal for that side. The test light should flash if the socket has power and is working. If there is no power at all going to the socket then you will need to follow the wire from the socket and look for a problem like cuts, corrosion or breakage.
Chances are it's just a problem with the bulb. Even a brand new bulb can be defective..
Good luck with it.. Let us know if you get it working.
October 8, 2005Tried all that. The bulb appears to be good. The two questions are 1) why does the light not come on with the headlights but works with the turn signal, and (2). Why does the turn signal indicator come on when I turn on the headlights even though the turn signal is not activated. It does flash if I activate the turn signal,but stays on when the turn signal shuts off. I don't know much about the wiring so I don't know the connection between the turn signal indicator and the headlights. Strange.
October 8, 2005Sounds like a bad ground or maybe the headlight switch or turn signal switch is going bad.
I'd check for a bad ground wire near to the signal light that's having the problem. If you don't know how to find it, ask a local shop. They might not mind showing you were to look.