Quoted from tomdotcom:The 300 I just sold recently in Canada had one of these borg boxes too
I once restored a pair of old AMi jukeboxes. Identical models, but one was tagged AMi Limited and had a Canadian address. The Canadian machine had all the main wiring running in steel conduit, and the US machine had a traditional wiring harness. As I recall, the Canadian machine also had extra ground wires.
Maybe it was a Canadian requirement?