Document the current wiring/clips and routing with detailed pictures prior to de-pinning the harness. If necessary use masking tape and/or zip tie to separate the wires and label each connection ...

Using the factory wiring—while an option—is often discouraged due to many factors, including age, weight, routing ... harness diameters and even includes shrink wrap and self-vulcanizing tape.

With the chassis and running gear resolved it was time to replace what was left of the original wiring harness ... and several rolls of electrical tape. Often the end result wasn't much better ...