Hi, I am a new member, and also a new driver. I recently purchased new speakers for my 2013 mazda 3 hatchback without the bose system. I installed them myself and they work, but they just completely turn off at certain times, sometimes random, sometimes when the window is rolled down, and sometimes when the low tire pressure warning comes on. The rear speakers came with crossovers, but i didnt care to use them because there is not tweeters in the rear. If i should install them because that is the problem how should i go about that? And if that is not the problem, does anybody have any suggestions as to what the problem is, and how i should fix it? It would be great to have these speakers up and running with no flaws!