shmups.system11.org

I have an N64 FRA with official RGB Mod.
If i connect the natif CSYNC signal to the luma pin 7 of the nintendo connector (luma signal) i would be able to use my snes retrogaming cable (wich have sync on luma)?
I would like to do it this way :

You mention the rare French console that is supposed to be easy to RGB mod. So we're talking PAL here.
Your cable is pulling luma from pin 7 of the multiout and placing it on pin 20 to use as sync. Official Nintendo cable pulls composite (CVBS) instead so luma is sort of an upgrade.
Sure you can connect CSYNC to pin 7 if you cut the trace to prevent luma from also being connected to pin 7. Your cable will work. This would, however, permanently disable S-Video. Up to you if it's worth it.

I'm with the group that says CSYNC doesn't matter if your cables are high quality, except if you need it specifically, such as for Extron device or to route to a computer monitor or RGB capture card.

I'm confused why the site states:

Like PAL N64 has luma last I checked. Retro Access sells a PAL sync over luma cable.

I think it's worded that way because PAL systems need a 75ohm resistor to ground and 220µF cap in series on Luma while NTSC would be straight through.