geodrake
Moderator Emeritus
The first thing I would do is disconnect all of the wires that have been tied together in place of the switch. Then determine which wire goes where. Finally, with all of those wires separated and no longer connected, reset all breakers and apply shore power to see if everything works. If everything works properly, remove the shore power and crank up the generator to see if everything works properly. Finally, go back to shore power and crank up the generator to see if everything including the transfer switch works properly.
If all of this passes, insert a 3-way switch and you should be back to original configuration.
If all of this passes, insert a 3-way switch and you should be back to original configuration.