alexanderdsmith, what do you mean with:
Quote"as long as you have a complete circuit between pins 7 and 8, and pins 16 and 17 on an X11 adapter"
You just need a switch to short-circuit pin 7 with pin 8 and pin 16 with pin 17 at the same time? You used a DPDT for that?
I've made a schematic for the switch, is this what you meant?