The lights are high and low pitch STOP indicators. The horizontal bar is the Reverse pitch "gate". That has to be pulled before the Throttles are pulled aft, and into reverse.
There is also a master prop lever, to the left that will control all four props thru a really cool prop sync box.
In front of the throttles, those levers are the fuel tank selectors. Some airplanes had either 8 tanks, or 10 tanks. the two levers in front of the co-pilots throtles are the aux.fuel tank selector levers. That was a 10 tank ship.
As a side note; I grew up in the Washington DC area, and knew the area well. When I started flying DC-6's into Dulles, I would take the crews to the Air and Space and we would walk through the DC-7 Cockpit. We would listen to the oh's and ah's, and then comment that we had to go fly the thing later that night.
Last edited by Willit Run; 4th Oct 2011 at 14:30.
Reason: additional info