65amp wiring/trouble shooting

Ah yes, I wanna tell someting about the ammeter itself to bring at leat this topic to an end.

As you know, my ammeter melted on the backside, probably because of the stuts that got loose over the years. This probably caused a bad connection, and then to overheating.
I've ordered a replacement part, OER 3592196, but it wasn't cheap (130$). It has a different insulation on the backside. I've driven like 400km since without any problem, so this might be a solution instead of getting a voltmeter and an alternator bypass. I'm sure I'm not the first to do this, but I've just wanted to show what I've done.

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