what are these wires ? 1972 dart 318
Can wipe the grease off with a cloth or paper towel. Often thats quicker an deasier than starting big cleaning project.
Photos and routing of the wire to the NSS and reverse light switch in this post
Daughters 72 dart not turning over
Some years there's an intermediate connector after the bulkhead for that harness.
Incredibly dumb question..Trans pig tail