I just did a quick search and saw an X495 wiring harness, two parts. One lights and one the rest, bit over $200. An X320 complete harness with fuses and fuse panel was only $90. Then there were used ones much cheaper. If I had to replace a harness and didn’t want to tackle it myself, I think I’d get a new harness and have it installed. At $85 an hour, I wouldn’t want a mechanic tracing each wire, unless they saw something right away and said the could fix it easy.