Found my dads original 1971 duster!

If this were mine and I was bypassing the ammeter, I would not simply attach the 2 wires together and have them "hanging in space." Instead, I would bolt both wires to 1 terminal of the ammeter posts and call it good. This way, you know the wires are firmly anchored together in a fixed position and will not someday have the insulating tape fall off and accidentally touch something since that would be a dead short. Perhaps Mr @Mattax may have an opinion on that as well.

Well done so far with all of your testing and debugging and buffing, etc, etc. You have a great looking car to be proud of!
Your point is a good one. Loose wires, especially with a bit of weight on them, can jiggle around and even if they don't hit somehting immediately, over time the strands next to the crimp gets stressed and break. I certainly am guilty of having ignored and despised the factory wire supports when I first started messing with cars. I've learned to respect them now.