Blacksheep - valid points. Some companies are stipulating that recent B1 converts cannot do wiring repairs beyond simple , single cable repairs related to their newly applicable ATAs. They need practical experience. This is a policy decision and is common sense.
Most connectors carry wiring related to multiple ATA chapters, so it would be a good idea to let the protected rights B2 or BCAR carry out repairs and mods.
This could be contentious!
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Bus429 - the pilot's pal!