Baldbaron,
I am in the process of installing Jim Carter's $180.00 harness. The price of copper has driven the cost of this harness up by $40.00 this year.
The harness is wrapped in a black weave that makes it look "Ol' Timey" and sorta origianl. It is much better than the 10 feet of electrical tape wrapped original harness I removed.
So far, it has been pretty easy to install and comes with turn signal wires built in to the main harness.
I know $180.00 is not cheap, but I know if I try to make my own, nothing will work...ever.
Gwen...Just have at it! It is easy...have a shop manual with the diagram handy and it won't take you long at all.