The metal part, does that need to be replaced also? Or the wiring? I've had a issue with it kicking on the tcs light, and amp gauge acting werid and flicking, will put it in limp mode. I've read you need to replace this to fix the issue but when I went to take it apart idk what all needs replaced. It did have arc marks on it. What all do I replace?

 

Just the fuse... I didn't replace mines but I cleaned up because it had corrosion

 

How do you undue the box and change this? I don't see, I assume the fuse is bad cause on the metal section there is a arc mark.

 

It's next to the battery on the firewall... Just follow the red cable it's two 10 mm bolts...