1960 C10 Mystery "Blue hole"

[LVPhotos]

The manual two port was not new to our trucks. My 56 Willeys Jeep had one, had to get new one and part # match to 62

[Submariner616]

Originally Posted by LVPhotos

The manual two port was not new to our trucks. My 56 Willeys Jeep had one, had to get new one and part # match to 62

This is the first time I have come across it, but I'm new at this. I wonder if the plug came out and someone plugged it with a piece of pipe and a cap.