First of all yesterday I installed my head unit and kept all of the stock Clarion speakers in. After playing a CD, I discovered that the front left speaker wasn't playing. This was the perfect excuse to buy a couple of 6.5" Pioneer speakers for the front. Later that day I came home and wired the right one first. After playing it was fine. The sound was great. I put the panel back on and installed the left speaker. After playing, the left side still wasn't working. I checked my wiring and just decided to re-splice the front left wires. After playing NONE of the speakers worked. I opted not to use a wiring harness, but that seemed to work at first so it isn't the problem. And I didn't even screw w/ the rear wiring before they stopped working. Have I already made a mistake?