2009 cobalt, stock radio, basic sound system-no tweeters or anything. I had door speaker issues before due to the infamous water issues, replaced them with cheap aftermarket ones which lasted maybe a year before they went back to cutting in/out, then stopping completely. I just went without door speakers for almost a year. I recently bought some decent aftermarket speakers, but when I hook them up, they don't work. I've tried wiggling wires/plugs, any thoughts on what this could be before I really tear into things? Thanks!