Turn signal - one flash on dash then just clicking..

[MrClancy]

Anyone ever run across this before? 79 2000. Right turn signal works just fine: the turn signal indicator on the dash lights up, and the lights on the rear and front of the car work just fine. The left signal seems to be possessed however; it works just fine if the headlights are off. But if the headlights are on, when I use the left turn signal, the turn signal indicator on the dash flashes just once, then the cylindrical aluminum relay clicks steadily away, but the turn signal lights on the car don't light up at all, and the indicator on the dash no longer flashes after that first flash. The hazard switch and light work fine in all scenarios, and the 'A' position fuse on the far right of the panel is fine. I don't know where to begin with this. Has anyone experienced this before? Thanks!

[TX82FIAT]

check your grounding pont in the trunk drivers side. Pods under the dash and on the inside of the engine bay. Take a real good look at the circuit board connection for the rear lights and clean them as well. I had the same type of issue with my 83'.

[jfrawley]

As TX82FIAT says, the grounds are a good place to start. I have a similar issue from time to time on my '82. The indicator light on the dash stops flashing but the signals continue to work. Because all of these connections run through the hazard switch, if I take my radio out and tighten all of those connections, the problems usually goes away. Just a thought.

[vandor]

When the inside light only flashes once it means that one of the turn signals is not working.
Since this is happening only with the lights on, it is likely a grounding or contact issue. It could be a poor ground at the front or rear light, or it could be a contact problem in the rear circuit board.
When this happens check to see if either the front or rear turn signal stops working or gets dimmer (sometimes the other lights will flash too), then you will know which one it is.

[MrClancy]

Hi All: Thanks for everyone's help. I checked all the circuit boards, cleaned up all the grounds, and the problem remained. Then, I bought a new flasher relay unit for $7.50, and wouldn't you know it, my turn signals now work just fine!

[spider2081]

You still might want to measure the voltage at your flasher. A poor connection between fuse A and the flasher could be a contributing factor to your problem.