Not sure about the harness things but i can help with quality 3 point belts for less $$$$ than what BMW charges for a pair of new 2002 belts (when they are available, as they go in and out of NLA status like other 2002 parts, and when reissued they costs twice as much). As I always recommend, If you want the best quality, save your money and buy from BMW, (ask Blunttech he has the best prices, tell him Rabbi sent you) they are plug and play and very-well engineered. I simply don't understand the fellows who spent big bucks on wheels, induction and other stuff for their 2002s but skim on safety. That said, I currently carry German aftermarket belts, which use Autoliv brand retractors (also some TRW/Repa parts) which is very close in quality to new BMW belts. It is my experience from restoring BMW (and some Porsche) that only the German (and some other European) made seat belts are the best quality and safest. On special request (will cost more, depending on the condition of your cores), I can also refurbish your old belts (have zillions of BMW seat belts parts), and also make 3-point rear retractable shoulder belts to replace the old automatic lap belts and spaghetti belts, all high quality. if you are interested shoot me a PM through FAQ.