The new black wire going to the fuse block is coming off the battery and is fine not hot. But the red wire coming off that fuse block was hot as can be but the rest of the red wire going to the relays is fine. The relays them self were just maybe a tad warm but not hot and all the other wires were cool.
Not sure what to replace? Fuse was a 40Amp after talking to my tuner he mentioned 40 was too much drop to a 20A. So I have a pack of 20s coming in. Anything else I should change?
If the red wire (labeled A) is hot yet red wire (labeled B) is not should I run wire B to the fuse block?
Have not experienced any fuel pressure issues at all.