I just intalled new horns today. I got them as a kit (including high/low tone horns and a relay) from harbor freight for about $8 (you will need a fuse holder and a 10 Amp fuse as well). After hooking everything up, I hit the switch and all i heard was a clicking noise coming from the relay. After wasting an hour or two double checking all the connections, I decided to get a new relay from radioshack (about $7). Now, it works excellent if I connect only one of the horns. If I wire both of them, 10 amp fuse blows immediately (manufacturer recommends 10 amp fuse
). Anyways , even the high tone horn alone is a great upgrade compared to OEM. I'll try to find out if 20 Amp fuse would be safe enough. So that I can wire both high and low tone.
Long story short, I think 8 bucks is a great price for 2 horns but you should get a quality relay.