I have a 95 accord and I replaced the rear 6's with custom 6x9's. For some reason my right rear is blown. I checked the wiring and there are 3 wires going to it. Its like 2 pos and 1 neg or the other way around and the other speaker has one pos and one neg. I know i have to buy one new one now, my question is how did this happen so i can prevent it from the new one which i need to get.

where is a good place online to find speakers.