Mr. Dane,
Both Tim and Greg have offer good advice, along with some good choices for wiring harness vendors. I have to say that I was really happy with YnZ's, in Redlands California. Yes, they are more expensive than some of the other alternatives. But the fit and finish of their product is excellent. Their easy to follow instructions were great. Not to mention, if you did run into something that you needed clarification for, they were available to walk you though it. I even happened to get the owner on the phone. They keep your specific wiring diagrams in their files. So, if you call, they can look at your specific diagram. I had them incorporate a turn signal harness into mine. Just a thought from somebody has been there and done that. You have probably learned, just because it is the least expensive, that doesn't mean that it is necessarily the best deal.
Good luck with your restoration.
Rugo