So, I have considered the perhaps odd idea of putting in all new fuses. Some of the blades on some of the ones I remove look burnt. Is this normal?

My theory would be.. What if some of them, are not making good connection. I have CRC QD Electronics spray.. should I give that a shot as well?

 

Burned terminals on the ATCs or melted elements at the end-caps of glass round fuses indicate a bad fuse holder. The fuse holder terminals get very hot and that heat transfers into the fuse body.

the fuses can also fail from current surges and age. The ATCs can oxidize/corrode or die of thermal shock where the fuse part connects to the terminals.

Cheap insurance to replace them.

It is NOT normal for anything to be burned. Probably a bad wire crimp on the female spade terminal in the fuse block. May have to bypass it with an in-line ATC fuseholder.

CRC wont do any good.Its dead, Jim.