In 2015 I received a 1948 Monarch 4-door Sedan to keep company with my 1928 Model 'A' Ford Tudor. During my trips through various flea markets, I acquired the timing jig, along with a photocopy of the Bulletin No. B-54, (Jan 31, 1944) directions.
I've included a picture, of the bottom interior section that holds the D-battery. The wires were dry, with cracked insulation wires. Otherwise it needed a cleanup and a new coat of paint. I'll use an old 1928 wiring harness to rewire that unit and find new clamps as well.
What I want to know is what is the rubber "boot" (right side lever) used for?