No power to dome light - checked all fuses, all good...

[davesnever]

Originally Posted by BPN

It is with great joy that I can report I have fixed the issue!!

The problem ended up being simple. Right by the BCM connector X7, the grey wire that feeds 12V to the dome light had broken somehow. It wasn't difficult at all to identify the wire, because it was the only broken one and had the right colour... I repaired it (which was tricky, lying upside down on the driver's seat with my head hovering above the pedals) and now my dome light works as it should. I'm very happy!

Thank you all for your support!

This is where many people are tapping into to add footwell lighting and most of the time are using scotch locks. That grey wire as I recall was a fairly small gauge. If you are not the original owner that's probably what you are encountering, someone else's installation. Scotch locks are handy at times but are famous for severing the wire you are tapping into.

[BPN]

Originally Posted by davesnever

This is where many people are tapping into to add footwell lighting and most of the time are using scotch locks. That grey wire as I recall was a fairly small gauge. If you are not the original owner that's probably what you are encountering, someone else's installation. Scotch locks are handy at times but are famous for severing the wire you are tapping into.

An extremely likely explanation. I've seen a few other wires down there that had scotch locks fitted. Also, I find there are quite a few screws and clips missing as I rummage around behind the dash and in the trunk. Sloppy craftsmanship by a former owner, I suppose.