on the green strip you use the 1st 2 plugs skip the 3rd then 4th and 5th you use. (closest to the BNC connector) as posted in these pics of mine
http://www.satelliteguys.us/free-air-fta-discussion/267822-digitrans-7100-a.html#post2653380
you can take a simple audio cord and strip back the outside wiring (negative) and the middle wire (positive)...otherwise Rat Shack has 2 options
RCA to tinned ends which would work
http://www.radioshack.com/product/index.jsp?productId=2103848
or cheaper...it has RCA to RCA end
http://www.radioshack.com/product/index.jsp?productId=2103856
all I did was cut the wire in half then carefully split the wires to + and - as noted in the pics
http://www.satelliteguys.us/free-air-fta-discussion/267822-digitrans-7100-a.html#post2653380
you can take a simple audio cord and strip back the outside wiring (negative) and the middle wire (positive)...otherwise Rat Shack has 2 options
RCA to tinned ends which would work
http://www.radioshack.com/product/index.jsp?productId=2103848
or cheaper...it has RCA to RCA end
http://www.radioshack.com/product/index.jsp?productId=2103856
all I did was cut the wire in half then carefully split the wires to + and - as noted in the pics