Unlike other hoppers, redstone wire cannot run on top of fluid hoppers.

This issue can be fixed with a mixin to the RedstoneWireBlock class:

https://github.com/haykam821/Golden-Hoppers/blob/05368d4ea2510461b170f817afc938cc42acc07c/src/main/java/io/github/haykam821/goldenhoppers/mixin/RedstoneWireBlockMixin.java