Well now, based on your pics, I need to retract my recommendation to replace the wiring harness. Those wires are remarkably preserved. You may just need to replace any of them that have been molested.You can acquire lengths of those cloth wires of the correct color tracers from the folks who sell cloth wiring harnesses. Sorry, I don't know the name of the outfit who sells them. I'm sure that Denney Graham would help you with that if you send him a PM.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission