What trim do you have? If you have an eco manual then yeah you only have 1 horn. the rest of the lineup has 2. As for plug and play most of them are. The mounting hardware will be your biggest issue. If you have a 2 horn cruze reuse your bracket from the factory horns to make the new ones work. The ATS horns is what I used to replace the blown out eco one until I eventually blew them out as well. Later in life I'm gonna just blame the negative cable for all the electrical stuff failing like it did.Hey, how's everyone doing? As i'm sure everyone here has noticed, the horn on the cruze is pretty wimpy. I was wondering if a horn from a tahoe/silverado would swap in with the same plug. If not, what is a good aftermarket horn that is easy to install?