Flickering Lights

Brought wife home Monday after successful surgery to remove kidney. Now I am chief cook and bottle washer!!
Did some more work on the Dart yesterday. I have decided to make a new wiring harness. The old harness is like a bird nest, burnt wires, different colors tied into different colored wires, and to replace sections of wire with correct color wire would not do away with splices/unions. Have started the process but had to order three more different colored wires to finish. Got a colored wiring diagram and another that list wire sizes used to connect components.
Hope to finish within the next week or so and will let everyone know how it goes or may have to come back for some HELP.
Have added a drawing of how wires were connected to starter relay, bulkhead, and battery. 20220223_170017.jpg

Thanks again for all the help.