I’d also note, given your sub 3k or bust goal
spxxx the complete wire harness from end to end only weighs ~59 lbs.
I know this because I pulled and labeled the entire harness from my 08 e92 (with most of the options including sunroof, drive) except DCT. That’s from the rear taillights, through the firewall to headlights but not including the underside battery cable.
I sent this to Germany and the 24”x24”x24” box weighed in at 62lbs. Had Martyn from Project Rogue thin it down retaining only the driveline and light components necessary. Don’t have an updated weight but will share once I do.
This means a significant portion of the 40-50lb weight savings you see posted with harness thinning is the modules, plastic brackets, metal brackets, etc. It’s not just a jumble of wires…
https://youtube.com/shorts/i6jrddnxPKI?feature=shared