,
This is the issue. The SC's are usually just parts swappers. Engineering does most of the diagnostics, and parts teardowns. This doesn't mean that engineering are the only ones capable of that, but they are the only ones with the knowledge of log detail and ability to ping new firmware to the car.So do you count only what the service centre does? or what Tesla does as a whole?
example, if you have a drive unit problem, the local centre simply swaps it, but Tesla doesn't eat the cost of a new drive unit, they send it back and then Tesla opens it up and fixes it. Elon famously talked about installing a shim worth only a few cents, but the service centre wasn't doing it, they were swapping it, and a drive unit is thousands of dollars. Which of those levels of granularity is acceptable?
As for the wiring connector, actually replacing connectors on wiring harnesses is common practice, because often replacing the whole harness starts with "disassemble entire car" as the wiring is usually put in before the interior whereas crimping a new connector on is a 5 minute or less task.