Flashing center running light.

[Strong50]

Hey guys. The center running light above the windshield is flashing. It's a repetitive pattern and it's the only light flashing. View attachment IMG_2323.MOV
what does this mean, I'm guessing that I put something back together wrong?

 

[Suprman]

Maybe a bad contact somewhere the ones along the roof are all daisy chained.

 

[TNriverjet]

I've had many lights start acting like they should if I just take things apart and re-assemble. It seems like connections can become compromised from just sitting not being used. I believe the cab lights are suspended in a rubber mount, so you may want to check the ground wire connection inside the housing since it isn't directly grounded to the cab metal.