Many thanks. Who would've thought they'd not have color coded wires??? Regardless-that answers the questions I had.
Bill

Have a very old version of the 36T Shay and bought new trucks to replace the originals. The instructions say to connect the black to black and red to red-logical; however, the front truck has only 2 red leads and the rear truck has only 2 black leads. Now what?? Secondly,do I use the springloaded contacts and remove the PCB board from the truck or do I use the PCB board on the truck with the leaf contacts? Obviously the newer models have a different wiring setup from the early original versions. Not sure when I bought this unit but it had to be in the 90's.
Would appreciate some info as to where do i go from here.