 
          We need to cover the entire decoder relief with Kapton tape,
        
        
          including the sides. I find that having multiple widths makes
        
        
          the job easier. One of the nice things about Kapton tape is
        
        
          that, being only 0.001 inch thick, it can be overlapped without
        
        
          excessive thickness build up.
        
        
          Run 3/8-inch Kapton tape down the length of the channel
        
        
          on the right side. Route the motor wires over this tape and
        
        
          through the wire relief hole in the right front of the frame. Use
        
        
          blue painters tape (less messy than traditional masking tape)
        
        
          to secure the orange and gray motor wires out the right front
        
        
          cable relief, as shown in figure 22. Run a length of the 3/8-
        
        
          inch Kapton tape down the left side, slightly overlapping the
        
        
          right piece – the motor wires should emerge from the frame
        
        
          between these pieces of tape. Use two pieces of 1/4-inch
        
        
          Kapton tape, one down each of the two sides to complete the
        
        
          insulation of the decoder cavity.
        
        
          Make hobby knife slices through the vertical tape at the cable
        
        
          troughs to allow room for the wires to connect the trucks and
        
        
          speaker to the decoder.
        
        
          
            21
          
        
        
          21: Lubricating the frame half where the trucks rotate.
        
        
          DCC Impulses column - 13
        
        
          MRH-Jan 2013