Blue Wire/ABS

Well I can't find anything related to abs in fuse panel there's an additional fuse box next to the main panel with few relays. Dealer checked them and also the one behind instrument panel(on the top) and found fuse is good,but terminals a bit melted. So they said that harness needs to be changed and also a chassis harness. So I'm trying to figuare if it's real to DIY? And if so may be some one hase those harnesses layouts and part numbers for them

 

I don't think you need an IP harness or chassis harness. KW does not have a diagram digitally available for trailer ABS. The trailer ABS was a spare circuit and it should be spare #4. The trailer ABS was wired through the trailer hotline best I can tell. Need to find what is melted. I added some other diagrams to help out. may just need to switch fuse location in panel and change wire out of red connector to original wire.

 

Ok now I see. And those diagrams will help me a lot. You guys are amazing I really appreciate your help!

 

Where would number four in pcb be at?