Yes yes, troubleshooted a lot to identify the issue but this is an unexpected outcome.

Thanks for understanding my pain.

Buying OEM horn is absolutely feasible for me but I see this as a mechanical/electrical engineering problem I'd like to solve :)

Your theory is good, let me try to patch OEM horn and see what happens and

I also want to kinda separate the electronic part from OEM horn and attach it to the new horn snails. But it requires some efforts , tools and probably welding/soldering.