I installed Voultar's N64 RGB Mod into my N64 and followed their instructions. I went for the C-Sync over LUMA. I then got a NTSC RGB C-SYNC SCART cable for the N64 and the RetroTink 2X SCART. There is video output but the colors are all messed up. Everything is stable and no other visual problems. When I use the original AV Cables, It is just fine. Here is my meh soldering job. Did I mess up something with C-SYNC or is one of the cables not in the right place?
Here is the Installation Instructions for the Kit.
Here is the Installation Instructions for the Kit.