Hey, i'm currently experiencing problems installing a nissan Sentra sports horn in my 2015 Sentra. I read in another forum that the nissan cube sports horn is compatible with the sentra, so that's what I'm working with. I've got it 650hz mounted on the left and the 550hz on the right. I've plugged it in several different ways and I can't get it to work. Not sure what else I should do. Anyone know what I'm missing?