[FetchMeAPepsi]

Originally Posted by Jim A

Sorry, no pictures.
To state the problem more simply, without the full story that I thought might be of interest to others here:
Years ago, (maybe 25) my turn signal dashboard indicator light began to occasionally fail to come on when the turn signals were working. I discovered that reaching under the dashboard and gently manipulating the area (lower right), the light would start to work.
As soon as it did so, I stopped nudging things and it world continue to work properly for extended periods, years in some cases. Then another failure would be easily "fixed" by another massage.
When this technique no longer worked. I removed the dash board and found a small break in the printed circuit leading to the indicator socket. I taped a small copper wire bridge across the crack and had no further problems for another extended period, years again.
If this is boring to you, think how I felt about it.
Same process again, but with obvious aging problems with the circuits and mounting board. I thought we had it working (with solder this time) well enough to re-install it, but the result has been unsatisfactory, with only short periods of acceptable performance.
I hoped someone here would have another approach to try, so I posted.
It is not life threatening, simply inconvenient. I check the actual signals before every trip and have never found a fault.
I do not think there is anything new here from my first post.
So, pending another dashboard dive, what I will do is come up with a reminding device to deploy when I want to turn.
I regret the uproar.

This is much more detailed and gives a better picture. As James said, it could be the plugs. They often get loose over time or corroded and broken. My own truck has a loose ground.
The other thing may be broken solder from heat/cold temp changes or a new crack. If you can just touch or slightly wiggle the plug, that's probably it. If it doesn't fix, it's probably your old repair or a new crack.