I don't have any recommendations (as I am not an electrician) except to be careful.
Keep all connections dry and dust free.
Can tell you how I do it:
https://www.backyardchickens.com/threads/coop-indoor-lighting-help.1278072/#post-20574460
Might want to put the EE's in the main coop/run while the Aussies are out ranging,
let them get the lay of the land(coop) unharassed.
Got plans to keep water thawed?