bbyer, I undertand what you are saying about the truly bad horn causing the good horn to go bad. However, replacing the horn that went bad returns everythnig back to normal. Here's the sequence of events: 1. Horn goes off continuously and burns fuse. 2. Replaced left horn with new one. 3. Both horns working for weeks. 4. Horn goes off continuously and burns fuse. 5. Disconnected right horn. 6. Left horn (the new one) working alone for weeks. 7. Left horn (the new one) goes off continuously until I remove fuse. 8. Waiting to buy two new horns. Notice that the new left horn was on its own for weeks before it went off again. Coincidence or poor quality/batch?