
Aftermarket or Factory Lights on 1977 F-250?
I’m working on getting the flashers functional. The truck has a flatbed with trailer LEDs that stay solid when you hit the turn signal. I’ve replaced what I thought were the front flasher bulbs and still can’t get them to illuminate so I’m trying to troubleshoot one step at a time and disconnected the rear LEDs.
I was able to get *a* turn signal to come on, just not the one I expected. My truck has small rectangular lights behind the grille that I assumed were running lights because they come on when I pull the headlight switch (see the arrow in the picture) but I was getting a slow blink for a few seconds then nothing.
Is this really the turn signal, or do I have a modified setup? And if so is it stock from 1977 or is it an aftermarket addition? They look like they could be from that era but I’m not positive.
Thanks guys!