I've made them up out of molex .100 housings before  ,crimping on terminals and using normal wires.
The earlier model Sterns used this type and they are very reliable , before they switched to the crappy ribbon cable type to save money i guess.
All the connections arn't used either on the SB100 boards  ,so you don't have to make up the whole lot of wires.
They do use most of them for the SB300 board though.