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In the 1.21.1 version of More Red, there is a known issue with Sodium which causes cables to render incorrectly. It can be fixed by using Embeddium instead of Sodium:
https://www.curseforge.com/minecraft/mc-mods/embeddium
Redstone-based plate-shaped logic gate blocks! You can rotate them and place them on walls and ceilings!
The blocks show you a preview of where you're about to place them when you're about to place them!
Wire anything to anything!
Attach wires and cables to walls and ceilings!
