We connected the electrical cabling to the EXP Switch unit. Then, checked that everything was working the way it should. The master energizes the master solenoid. If the avionics switch is turned on, when the started is engaged, it shuts off the power to the avionics. Everything seems to be working as it should. I will need to disconnect the unit and wire each of the switches BEFORE installing it back in the panel. There isn’t enough room to easily turn the screws on the switches with the EXP installed.
It is soooo cool having the electrical working. We engaged the started and watched the prop spin!