Got around to finishing off the heated/elec lumbar seats. I fancied making my own loom rather than buying, using genuine repair wires for connection to fuse box, HVAC and BCM. Luckily my seats came with both halves of the electrical connector. All joints soldered, heat shrinked and the loom wrapped in cloth loom tape. It’s about a 5h job including stripping out the seats and accessing the dash connectors, making up the loom and putting it all back together. Oh, and coding the BCM.