1941 woodie wiring issues

[30aadoodlebug]

My Uncle just bought this car for my folks as a surprise gift for their 50th wedding anniversary. The car is in great shape for being a true survivor.

When who ever did the electrical work redid the main harness, they screwed up hard. All lights and accessories only work with the high beam dimmer switch on, and the cab accessories like the heater only run when the headlight switch is pulled out.

I know shoebox era wiring, but this is new territory.

Thoughts?

Jon