I just replaced my stock tooty horn with a Fiamm 74100. It sounds great, basically a clone of a Buick or Crown Vic etc. American car horn. It's not incredibly loud like an air horn but a nice serious honk. Incredibly easy to install (needs plugs and wiring) except for the connector to the car wiring. (see below) I have two questions: 1) Does the car alarm use the factory horn? (it's the super high pitched squealer alarm that makes your fillings scream) If so what is going to happen when the car tries to do it through the new horn? 2) Is there any way to get a plug for the new horn's wiring so I can snap it into the wired factory socket? I cut off one prong of a two prong plug and filed it down to fit solid inside the positive side of the factory wiring socket, then tied and wrapped everything, it won't come off. But I'd like to get a waterproof/dirtproof 'factory fit' for the plug. Can't find anything similar in the auto parts stores, and searching for a plug on the web is not productive, there are thousands. The Molex part number on the horn(a Kia horn by the way) doesn't help, not listed anywhere. Maybe I can buy another factory horn and take off the plug (if it's cheap)? Thanks!