Found out that my horns were faulty, Bosch Europa's definitely do go kaput after all. Funny thing was that the security system will malfunction if the horns are defective. Damn clever Germans!
Must be with the way they're wired/grounded with the security system? I've had several Europas (silver and black) go kaput before; normally due to water ingestion from an errant hose when the driver's used to wash the cars.