Yeah that helps quite a bit Chris, thank you
I don't think I have the adaptor housing that you describe, so perhaps something else on the fabrication list.
The 19set and psu etc are still in Canada at the moment.
Never thought for one moment the installation would be this involved
The mk2 unit I have purchased still works or worked....has not been powered up for a long time. I have a pal who knows about the sets and will slowly power it up for me.
I want to use the A set (which I will get licensed for) and the intercom.