I searched for anyone else having this issue, but was unable to find anything similar that worked.
Car is an 88 Formula, but has a 87 front wiring harness as I "believe" the original harness had the same issue.
I have LED switchbacks in the front bumper lights that run white with the driving lights and amber with the turns. The problem is that both the turn signals for the passenger side are not working (I switched the bulbs from the other side and the same doesn't work, so its not the bulbs)
Once again, I "believe" the original harness had the same issue, but I could be wrong, I switched the harnesses over the summer when I tore the car down to the frame. I think the idea was to fix this same problem, but at this time I don't remember. I just got power back to the car the other day so I am rediscovering the issue.
I thought about trying to put a new socket on the front turn signal to see if that fixes the problem, but I don't know if that explains why the side signal isn't working either. The fender grounds are in place on both sides, horn works, etc.
Any ideas other that me trying to solder on a new turn signal socket?
I second the grounds. I had one side that wouldn't flash, the ground wire at the front of the bumper turn signal was broken, but appeared just fine until I really yanked on it. Long story. But, as for the flasher units. Did you replace both flashers? And if so, did you use a flasher intended for LED's?
[This message has been edited by viperine (edited 02-04-2016).]