I am attempting to replace the stereo in my car (91 Honda Accord) with one that I got for my birthday not too long ago. The stereo is a Dual XDMR7710 a nice stereo if you have ever seen it. I know it works because it used to be in my 1987 Bronco II before I sold it. The old stereo worked in my car, this is just a new one. So anyway I hooked everything up last night and I got nothing from the cd player. I double checked my wiring making sure that the red (power) yellow (memory) and black (ground) were hooked up right so that it was getting power, but nothing happened. I then checked the fuses in both the car and the cd player. I discovered the fuse in the car had blown so I replaced it, but I am still getting nothing. I have all the wires hooked up right, but there is one thing that I don't know of. There is a red and black wire back there with nothing to hook up to it. I don't know if that could have anything to do with it or not. I have tried looking stuff up on the internet and it always tells me to just check the red yellow and black wires and the fuses, which I have already done.

I believe the red is positive, black is negative, and the yellow goes to constant hot for memory? Be sure you have stereo grounded(black), and have power to red and yellow.