65amp wiring/trouble shooting

Still interested in what you found regarding the alternator tag and the wires connections we were discusing on the previous page.
Okay my friend, I have done some research but my results are not what I was expecting... I'm actually a bit disappointed.
As a reminder: We are looking at a '74 built car which was exported/imported to Switzerland, so I'm not sure about some modifications done by the Swiss...

First of all, yes, there's a tag on the alternator. I'm assuming I can take it off to read it properly? It seems to be bolted on with a screw but I don't want to unscrew something important (I've never worked on an alternator).
IMG_20230721_222035.jpg

Now the confusion starts: There's a split on the positive battery cable which isn't showed on the chart. The A1A-10R is correct, but there's a bigger one going on the starter, but that must be standard, obviously. I'm just confused why this isn't on the chart.

IMG_20230719_174415.jpg

IMG_20230719_174423.jpg (the red wire is wrapped in black insulation tape here)

It also appears that some of the standard wires were left connected. Did they operate in parallel? Or was a segment removed or cut and capped?
I'm not really sure what specific wires you mean. Only thing I know to be different from a "normal" harness is the ammeter wires, which is split in two wires (alternator wire, R6E 8BR), continuing as R6D 8BK / C13 12BK). Those two black wires lead to the ammeter, together with AIF 8R.

IMG_20230719_175338.jpg

You've been asking if C13 12BK is going direct to the heated back lite relay. To be honest, I have no idea because I don't know where the heated back lite relay actually is. It must be under the dash? The other problem is the wiring itself, I'd have to remove the cluster (again) to see where the wires go, unless I've completely misunderstood. Most wires are tied up in insulation tape aswell so finding out where it leads makes it difficult unless I unwrap everything. There's a huge mess under the dash because the pre-owner was a d***head...

My other problem is, we have had so many posts in this thread, I've lost focus on what details we were looking for, except for the alternator questions. I'd like to get together all your questions to one post (if possible), so it's also easier to find the answers if anybody else needs those informations.

What else I can offer is to look at every wire in my harness and create a new chart, but that'd take a huge amount of time. The reason I talk about that is simple: I've checked the charts you've sent and found out some things are missing or not the same as the wires in my car (or they just don't seem to be the same). I mean it starts at the starter relay. There are only two wires in the chart, but I count like 6 or so on my car.

IMG_20230719_175313.jpg

I'm going to re-read the previous posts tomorrow morning again (I've been up for like 19h now) to see if I've misread something.
I actually want to excuse me to take so much time with all this stuff here. It's not my intention to make this thread this ... troublesome? (Google translater said that's a word)