Since they are not yours - I can give a plug for my favorite place to source horns: Speedway Motors. Yes they are circle track and Hot Rod guys. But they have the lowest price I have found for horn sets. If you want standard electric they run around $30 for the pair. If you want air horns, they have a set (with compressor) for less than the standard electric. I have the standard in Milo and Buford and I have the air horns in Rocky. All work well.