[commodorenutt]

I've been running Focus dual horns on the front of my FG since it was near new - replacing the feeble single original. They point down, and don't collect water.

I have also used the same type of OEM Fiamm dual horns - fitted to TS Astras & other euro-sourced Holdens from the era, on other cars, and never had a failure on them either.

I've never had any of them fail, and they cop water spray & everything. The Astra mounts them horizontally below the RH headlight, with the opening facing 45 degrees backwards. But on cars I've put these style horns on, they've all been vertical.

I'd suggest if water is your problem, then see if you can mount them like an Astra, as they seem to drain better (and any trapped water only sits in plastic).

I think it's unlikely that your new replacements will fail quickly - unless you're really abusing the horn. My experience with them is they last a long time with "normal use" unless there's a manufacturing defect, or they get water sitting in them.