67 Chevy and gmc dash harness' the same?

[chewychevy67]

All you have to do is move the brown wire on the headlight switch pigtail on 68 up to make them come on like 67's. My under dash harness is uncut and very nice. I was thinking about reusing it. But someone has removed the white writing on the fuse block and the terminals where the fuse clips in look rusty. I cleaned them best I can. Not sure if this will cause problems