I'm "that folk".

I had an '01 but had replaced tail lights due to an accident. I noticed that the 21w filament had a trace that went nowhere. I added a jumper so all four brake lamps lit when braking.

Also, there exists a jumper than will adapt before and after LCI hookups.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)