Have you had the truck since new? I was having trouble with the fuse able link on mine it wouldn’t turn over sometimes have power than it would cut out. So I picked up two from Nissan and bam fixed everything. Mines is a 2016 with 148k running strong. Most of my problems were with the emission crap I decided to delete and tune it and runs like a champ.
I am the 3rd owner. First owner was a lease for about a year then the second owner had it for most of its life. I picked it up with 150k on it now I’m just under 160k. The def system is all new (heater went out) and fuel system is all new (accidental def in diesel) that the previous owner installed before I got it. Where I live they are cracking down on emissions but if it ever acts up on me it just may accidentally fall off 😂. When talking fuses do you mean the ones on the positive terminals?