Looking for recommendations on where I can get some good wiring harnesses? Either new made to fit or ones that have been removed and tested.

all of the ones that I have seen on eBay or Byselle trade groups look worse than the ones I have. All except for the ones that are completely worn through and not functioning. I saw some universal ones on a number of off-road sites but I’m not an electrician. I’d really prefer to find something that was manufactured to fit.