Here are shots of the completed electronics bay. I decided to mount the rails to the sled, instead of inside the coupler. The switches are mounted to the coupler and have the computer power molex connector on them to attach them to the board. Whole thing slides in, plug in the switches, put on the bulkheads, screw down the eye nuts and push in the key pin (through the hole in the threaded rod.) and boom, ready to fly!