u/Sorry-Pin-1435

Hi, I have a 2006 BMW E90 318i.

Under the passenger seat (photo 1,2), the wiring looks original with the yellow airbag/seat connector plugging into the seat harness.
But under the driver seat (photo 3), the previous owner seems to have cut or bypassed the original yellow connector. The wires are taped together and it looks very non-OEM.

I have an airbag/seatbelt warning and I want to repair it properly.

Does anyone know what connector or harness I need to buy?
Should I replace the full driver seat wiring harness, or can I repair it with an OEM yellow connector/pigtail?

Pictures attached.

Thanks!