Yes...above video is one switch for 46rh OD.Just so we got it all right here on one post .
Can someone explain Lock up convertor & None lock up convertor..
There are 47rh videos which show how to wire two switches. One for OD and one for lock-up.
As you know, the torque converter in front of your 727 is basically a viscus coupler...allowing the motor to spin with the transmission locked in park (or, with the brakes on). Same for the torque converter that goes with the 46rh.
A lock-up torque converter locks the motor output to the transmission input at highway speeds. Thereby reducing the power loss which all viscus couplers induce. Slightly better highway MPG is the point. The TC is locked and unlocked, I think, basted on speed and torque. Anyway, guys who have the 47rh, and don't want a transmission controller, and want that lock-up function to work...generally, put it on a toggle switch.
I imagine one could decide to have the OD and lock-up on the same switch...I am not sure why that's not ideal...but, I don't think it is.