Sometimes a person is better than a thing in cost. If you look around you can probably find a savvy auto electric mechanic that can rewire your car far cheaper than the cost of a harness.

Even in expensive California I found a guy that did my dash forward for $450. The couple wires running to tail lights were still fine. The cheapest Packard harness was $600 and I've seen them for $1300.

Ask people where you are.