So there is a small connector plug zip tied to the plastic tray under the seat. What is it supposed to be used for? Can I modify it to use as a USB charger for my phone etc?
It's an accessory power outlet, you can buy a BMW accessory loom for it, BMW Part #: 61 12 8 545 380...but why do you not just use the Din socket on the left dash fill panel, that's what it's there for....?? BMW make a usb phone charger adapter to fit this port, two actually, one is 600mm long, Part #: 77 52 2 414 855 or 1200mm long, Part #: 77 52 2 414 856
Smithy.