[Oldsguy]

You might do better to find the switches to match the harness instead of adapting the harness to match the switches on your car, I bet the hole diameter in the post would be the same. About the orange wire near the glovebox, it may be the cigarette lighter wire, is it larger guage? I think it is fused on it's own. Have fun my friend, working with old wiring is a hassle. Double inspect all the harness before you use it and repair any nicks or breaks before you get it in the car. If you can get an ohmeter and a friend to help you, check continuity on every wire from end to end while the friend flexs the wire you are checking, the conductor may be brittle and open even though the insulation on the outside looks good. Cheap insurance and worth the time spent.