On Thu, 19 Oct 2017 17:02:23 -0700 (PDT), trader_4
wrote:

Hi KenK ; I suspect that your old mobile home wiring uses
twist-on connectors - commonly called Marrettes - link below.

We call those wire nuts in these parts. Never heard them call a
Marrette before. Sounds like a dance troupe.

Don't speak Canadian in NJ eh?
Marrette is named after the company that makes them up there and the
founder Wm. Marr
The original was a barrel and setscrew design with a insulating cap
that screwed on. I have seen a few of them over the years.
The current product is a coiled spring screw on, like a regular US
wire nut.