This closed thread discusses the 4 lock ons for this accessory. 2 go to power and 2 go to a slider switch:
Anyone know how to wire a Lionel Harry's barber shop
I would like to wire this to an AIU port. Can I just run the switch lock-ons on the Barber Shop to the AIU (and power the shop from a power bus under my layout)? Or does the AIU port need power?
Thanks, as always!