Ahhhh! I'm not the biggest audio expert but new door speakers should be easy enough, right? I picked new pair for my 89 convertible today and first they were the right diameter but wrong depth. Now i have the right size and i'm trying to figure out which wire is the positive and which is negative (there'sa blue and an orange). SOunds like a simple question but I've spent the last hour trying to find out so i can put the car back together and go to bed but I''m not having any luck. Thanks in advance