I'd check the lighter (orange) wire in the area you were working. Perhaps it got pinched or grounded somewhere.....

My wiring is 42 years old, I spent some time refurbishing and rewrapping it on the bench while restoring the car from the ground up.., but the wires were pliable and had never been cut in to except one spot which I shrink wrapped after soldering together...Everything works although I did have to run a new temp wire; and a new ignition wire due to Pertronix Ignition.