nav /comm radios

Hi All,
i have just got my displays 2 cards and 7 seg displays and holders. My problem is this. I dont know how to get the nav and comm radios working. Does anyone have a working B737 sioc text file i can look at to see where i am going wrong with the radios. I cant seem to get the digits to display in the right sequence. From using a multi meter i figured that the right digit is digit 1 and the far left digit is digit 5. Any help much appreciated.
Trevor

P.S i am running 2 rotary encoders, 5 displays for standby freq, and 5 displays for active freq, and a pushbutton to swap between active and standby freq.