The axle in my truck is a single speed. The lever you see getting moved periodically is the turn signal. They were added in 1948 by my grandpa when the laws were changing and I guess they hadn't standardized on having them on the left, so they are still on the right of the column.
Yes, the 4 and 3 speed transmissions give 12 forward and 3 reverse gears. I have a few posts in the big bolt section with more details. Check the downshifting a 46 2 ton thread for a bit more explanation.
The camera is a go pro hero 4 mounted on a homemade magnetic mount just above the seat back. It is ok for close work, but has too much of a fisheye lens for general use.
