Hello everyone. I have been searching this thread for quite a while now, and while I have found some problems that were similar to mine, I haven't found any that were exactly like mine. I have a 2004 Ram, with the 7 speaker Infiniti sound system. I installed an aftermarket Pioneer cd player, and everything sounds great except the driver side door speaker will not work, but it worked with my factory unit. All of the other speakers work great, even the 2 other front, left speakers. I've read on the forum where people will have a few speakers not work, but I only have one that doesn't. I triple checked all of the connections, and all of the wires are matched to their appropriate colors. Any suggestions as to why the amp isn't pushing power to this one speaker? Thanks in advance.

 

Start with the basics. Check your wiring where you made your connections from the old head unit to the new one